diff --git a/doc/pending.txt b/doc/pending.txt
index aad924c..66882b9 100644
--- a/doc/pending.txt
+++ b/doc/pending.txt
@@ -35,7 +35,7 @@ Features: ~
   names, month names, ordinals, and more
 - Recurring tasks with automatic next-date spawning on completion
 - Two views: category (default) and priority flat list
-- Multi-level undo (up to 20 `:w` saves, persisted across sessions)
+- Multi-level undo (up to 20 `:w` saves, session-only)
 - Quick-add from the command line with `:Pending add`
 - Quickfix list of overdue/due-today tasks via `:Pending due`
 - Foldable category sections (`zc`/`zo`) in category view
@@ -149,23 +149,6 @@ token, the `D` prompt, and `:Pending add`.
     `soy` / `eoy`       January 1 / December 31 of current year
     `later` / `someday`  Sentinel date (default: `9999-12-30`)
 
-Time suffix: ~                                             *pending-dates-time*
-Any named date or absolute date accepts an `@` time suffix. Supported
-formats: `HH:MM` (24h), `H:MM`, bare hour (`9`, `14`), and am/pm
-(`2pm`, `9:30am`, `12am`). All forms are normalized to `HH:MM` on save. >
-
-    due:tomorrow@2pm         " tomorrow at 14:00
-    due:fri@9                " next Friday at 09:00
-    due:+1w@17:00            " one week from today at 17:00
-    due:tomorrow@9:30am      " tomorrow at 09:30
-    due:2026-03-15@08:00     " absolute date with time
-    due:2026-03-15T14:30     " ISO 8601 datetime (also accepted)
-<
-
-Tasks with a time component are not considered overdue until after the
-specified time. The time is displayed alongside the date in virtual text
-and preserved across recurrence advances.
-
 ==============================================================================
 RECURRENCE                                               *pending-recurrence*
 
@@ -259,7 +242,7 @@ COMMANDS                                                    *pending-commands*
 :Pending undo
     Undo the last `:w` save, restoring the task store to its previous state.
     Equivalent to the `U` buffer-local key (see |pending-mappings|). Up to 20
-    levels of undo are persisted across sessions.
+    levels of undo are retained per session.
 
 ==============================================================================
 MAPPINGS                                                    *pending-mappings*
@@ -434,19 +417,6 @@ Fields: ~
                          |pending.GcalConfig|. Omit this field entirely to
                          disable Google Calendar sync.
 
-==============================================================================
-RECIPES                                                      *pending-recipes*
-
-Configure blink.cmp to use pending.nvim's omnifunc as a completion source: >lua
-    require('blink.cmp').setup({
-      sources = {
-        per_filetype = {
-          pending = { 'omni', 'buffer' },
-        },
-      },
-    })
-<
-
 ==============================================================================
 GOOGLE CALENDAR                                                 *pending-gcal*
 
diff --git a/lua/pending/buffer.lua b/lua/pending/buffer.lua
index 932c414..553be7d 100644
--- a/lua/pending/buffer.lua
+++ b/lua/pending/buffer.lua
@@ -37,12 +37,10 @@ function M.current_view_name()
   return current_view
 end
 
----@return nil
 function M.clear_winid()
   task_winid = nil
 end
 
----@return nil
 function M.close()
   if task_winid and vim.api.nvim_win_is_valid(task_winid) then
     vim.api.nvim_win_close(task_winid, false)
@@ -81,7 +79,6 @@ local function setup_syntax(bufnr)
 end
 
 ---@param above boolean
----@return nil
 function M.open_line(above)
   local bufnr = task_bufnr
   if not bufnr or not vim.api.nvim_buf_is_valid(bufnr) then
@@ -208,7 +205,6 @@ local function restore_folds(bufnr)
 end
 
 ---@param bufnr? integer
----@return nil
 function M.render(bufnr)
   bufnr = bufnr or task_bufnr
   if not bufnr or not vim.api.nvim_buf_is_valid(bufnr) then
@@ -253,7 +249,6 @@ function M.render(bufnr)
   restore_folds(bufnr)
 end
 
----@return nil
 function M.toggle_view()
   if current_view == 'category' then
     current_view = 'priority'
diff --git a/lua/pending/complete.lua b/lua/pending/complete.lua
index 79f338b..f83b6a4 100644
--- a/lua/pending/complete.lua
+++ b/lua/pending/complete.lua
@@ -29,75 +29,48 @@ local function get_categories()
   return result
 end
 
----@return { word: string, info: string }[]
+---@return string[]
 local function date_completions()
   return {
-    { word = 'today', info = "Today's date" },
-    { word = 'tomorrow', info = "Tomorrow's date" },
-    { word = 'yesterday', info = "Yesterday's date" },
-    { word = '+1d', info = '1 day from today' },
-    { word = '+2d', info = '2 days from today' },
-    { word = '+3d', info = '3 days from today' },
-    { word = '+1w', info = '1 week from today' },
-    { word = '+2w', info = '2 weeks from today' },
-    { word = '+1m', info = '1 month from today' },
-    { word = 'mon', info = 'Next Monday' },
-    { word = 'tue', info = 'Next Tuesday' },
-    { word = 'wed', info = 'Next Wednesday' },
-    { word = 'thu', info = 'Next Thursday' },
-    { word = 'fri', info = 'Next Friday' },
-    { word = 'sat', info = 'Next Saturday' },
-    { word = 'sun', info = 'Next Sunday' },
-    { word = 'eod', info = 'End of day (today)' },
-    { word = 'eow', info = 'End of week (Sunday)' },
-    { word = 'eom', info = 'End of month' },
-    { word = 'eoq', info = 'End of quarter' },
-    { word = 'eoy', info = 'End of year (Dec 31)' },
-    { word = 'sow', info = 'Start of week (Monday)' },
-    { word = 'som', info = 'Start of month' },
-    { word = 'soq', info = 'Start of quarter' },
-    { word = 'soy', info = 'Start of year (Jan 1)' },
-    { word = 'later', info = 'Someday (sentinel date)' },
-    { word = 'today@08:00', info = 'Today at 08:00' },
-    { word = 'today@09:00', info = 'Today at 09:00' },
-    { word = 'today@10:00', info = 'Today at 10:00' },
-    { word = 'today@12:00', info = 'Today at 12:00' },
-    { word = 'today@14:00', info = 'Today at 14:00' },
-    { word = 'today@17:00', info = 'Today at 17:00' },
+    'today',
+    'tomorrow',
+    'yesterday',
+    '+1d',
+    '+2d',
+    '+3d',
+    '+1w',
+    '+2w',
+    '+1m',
+    'mon',
+    'tue',
+    'wed',
+    'thu',
+    'fri',
+    'sat',
+    'sun',
+    'eod',
+    'eow',
+    'eom',
+    'eoq',
+    'eoy',
+    'sow',
+    'som',
+    'soq',
+    'soy',
+    'later',
   }
 end
 
----@type table<string, string>
-local recur_descriptions = {
-  daily = 'Every day',
-  weekdays = 'Monday through Friday',
-  weekly = 'Every week',
-  biweekly = 'Every 2 weeks',
-  monthly = 'Every month',
-  quarterly = 'Every 3 months',
-  yearly = 'Every year',
-  ['2d'] = 'Every 2 days',
-  ['3d'] = 'Every 3 days',
-  ['2w'] = 'Every 2 weeks',
-  ['3w'] = 'Every 3 weeks',
-  ['2m'] = 'Every 2 months',
-  ['3m'] = 'Every 3 months',
-  ['6m'] = 'Every 6 months',
-  ['2y'] = 'Every 2 years',
-}
-
----@return { word: string, info: string }[]
+---@return string[]
 local function recur_completions()
   local recur = require('pending.recur')
   local list = recur.shorthand_list()
   local result = {}
   for _, s in ipairs(list) do
-    local desc = recur_descriptions[s] or s
-    table.insert(result, { word = s, info = desc })
+    table.insert(result, s)
   end
   for _, s in ipairs(list) do
-    local desc = recur_descriptions[s] or s
-    table.insert(result, { word = '!' .. s, info = desc .. ' (from completion date)' })
+    table.insert(result, '!' .. s)
   end
   return result
 end
@@ -138,29 +111,24 @@ function M.omnifunc(findstart, base)
     return -1
   end
 
-  local matches = {}
+  local candidates = {}
   local source = _complete_source or ''
 
   local dk = date_key()
   local rk = recur_key()
 
   if source == dk then
-    for _, c in ipairs(date_completions()) do
-      if base == '' or c.word:sub(1, #base) == base then
-        table.insert(matches, { word = c.word, menu = '[' .. source .. ']', info = c.info })
-      end
-    end
+    candidates = date_completions()
   elseif source == 'cat' then
-    for _, c in ipairs(get_categories()) do
-      if base == '' or c:sub(1, #base) == base then
-        table.insert(matches, { word = c, menu = '[cat]' })
-      end
-    end
+    candidates = get_categories()
   elseif source == rk then
-    for _, c in ipairs(recur_completions()) do
-      if base == '' or c.word:sub(1, #base) == base then
-        table.insert(matches, { word = c.word, menu = '[' .. source .. ']', info = c.info })
-      end
+    candidates = recur_completions()
+  end
+
+  local matches = {}
+  for _, c in ipairs(candidates) do
+    if base == '' or c:sub(1, #base) == base then
+      table.insert(matches, { word = c, menu = '[' .. source .. ']' })
     end
   end
 
diff --git a/lua/pending/config.lua b/lua/pending/config.lua
index ec89cb2..3318b3d 100644
--- a/lua/pending/config.lua
+++ b/lua/pending/config.lua
@@ -63,7 +63,6 @@ function M.get()
   return _resolved
 end
 
----@return nil
 function M.reset()
   _resolved = nil
 end
diff --git a/lua/pending/diff.lua b/lua/pending/diff.lua
index daab788..bec3baa 100644
--- a/lua/pending/diff.lua
+++ b/lua/pending/diff.lua
@@ -65,7 +65,6 @@ function M.parse_buffer(lines)
 end
 
 ---@param lines string[]
----@return nil
 function M.apply(lines)
   local parsed = M.parse_buffer(lines)
   local now = timestamp()
diff --git a/lua/pending/health.lua b/lua/pending/health.lua
index cc285e0..78311d2 100644
--- a/lua/pending/health.lua
+++ b/lua/pending/health.lua
@@ -1,6 +1,5 @@
 local M = {}
 
----@return nil
 function M.check()
   vim.health.start('pending.nvim')
 
diff --git a/lua/pending/init.lua b/lua/pending/init.lua
index 631c0e3..216b8b3 100644
--- a/lua/pending/init.lua
+++ b/lua/pending/init.lua
@@ -6,6 +6,8 @@ local store = require('pending.store')
 ---@class pending.init
 local M = {}
 
+---@type pending.Task[][]
+local _undo_states = {}
 local UNDO_MAX = 20
 
 ---@return integer bufnr
@@ -17,7 +19,6 @@ function M.open()
 end
 
 ---@param bufnr integer
----@return nil
 function M._setup_autocmds(bufnr)
   local group = vim.api.nvim_create_augroup('PendingBuffer', { clear = true })
   vim.api.nvim_create_autocmd('BufWriteCmd', {
@@ -48,7 +49,6 @@ function M._setup_autocmds(bufnr)
 end
 
 ---@param bufnr integer
----@return nil
 function M._setup_buf_mappings(bufnr)
   local cfg = require('pending.config').get()
   local km = cfg.keymaps
@@ -91,33 +91,28 @@ function M._setup_buf_mappings(bufnr)
 end
 
 ---@param bufnr integer
----@return nil
 function M._on_write(bufnr)
   local lines = vim.api.nvim_buf_get_lines(bufnr, 0, -1, false)
   local snapshot = store.snapshot()
-  local stack = store.undo_stack()
-  table.insert(stack, snapshot)
-  if #stack > UNDO_MAX then
-    table.remove(stack, 1)
+  table.insert(_undo_states, snapshot)
+  if #_undo_states > UNDO_MAX then
+    table.remove(_undo_states, 1)
   end
   diff.apply(lines)
   buffer.render(bufnr)
 end
 
----@return nil
 function M.undo_write()
-  local stack = store.undo_stack()
-  if #stack == 0 then
+  if #_undo_states == 0 then
     vim.notify('Nothing to undo.', vim.log.levels.WARN)
     return
   end
-  local state = table.remove(stack)
+  local state = table.remove(_undo_states)
   store.replace_tasks(state)
   store.save()
   buffer.render(buffer.bufnr())
 end
 
----@return nil
 function M.toggle_complete()
   local bufnr = buffer.bufnr()
   if not bufnr then
@@ -142,7 +137,9 @@ function M.toggle_complete()
     if task.recur and task.due then
       local recur = require('pending.recur')
       local mode = task.recur_mode or 'scheduled'
-      local next_date = recur.next_due(task.due, task.recur, mode)
+      local base = mode == 'completion' and os.date('%Y-%m-%d') --[[@as string]]
+        or task.due
+      local next_date = recur.next_due(base, task.recur, mode)
       store.add({
         description = task.description,
         category = task.category,
@@ -164,7 +161,6 @@ function M.toggle_complete()
   end
 end
 
----@return nil
 function M.toggle_priority()
   local bufnr = buffer.bufnr()
   if not bufnr then
@@ -195,7 +191,6 @@ function M.toggle_priority()
   end
 end
 
----@return nil
 function M.prompt_date()
   local bufnr = buffer.bufnr()
   if not bufnr then
@@ -210,7 +205,7 @@ function M.prompt_date()
   if not id then
     return
   end
-  vim.ui.input({ prompt = 'Due date (today, +3d, fri@2pm, etc.): ' }, function(input)
+  vim.ui.input({ prompt = 'Due date (YYYY-MM-DD): ' }, function(input)
     if not input then
       return
     end
@@ -219,11 +214,8 @@ function M.prompt_date()
       local resolved = parse.resolve_date(due)
       if resolved then
         due = resolved
-      elseif
-        not due:match('^%d%d%d%d%-%d%d%-%d%d$')
-        and not due:match('^%d%d%d%d%-%d%d%-%d%dT%d%d:%d%d$')
-      then
-        vim.notify('Invalid date format. Use YYYY-MM-DD or YYYY-MM-DDThh:mm.', vim.log.levels.ERROR)
+      elseif not due:match('^%d%d%d%d%-%d%d%-%d%d$') then
+        vim.notify('Invalid date format. Use YYYY-MM-DD.', vim.log.levels.ERROR)
         return
       end
     end
@@ -234,7 +226,6 @@ function M.prompt_date()
 end
 
 ---@param text string
----@return nil
 function M.add(text)
   if not text or text == '' then
     vim.notify('Usage: :Pending add <description>', vim.log.levels.ERROR)
@@ -261,7 +252,6 @@ function M.add(text)
   vim.notify('Pending added: ' .. description)
 end
 
----@return nil
 function M.sync()
   local ok, gcal = pcall(require, 'pending.sync.gcal')
   if not ok then
@@ -272,7 +262,6 @@ function M.sync()
 end
 
 ---@param days? integer
----@return nil
 function M.archive(days)
   days = days or 30
   local cutoff = os.time() - (days * 86400)
@@ -309,46 +298,8 @@ function M.archive(days)
   end
 end
 
----@param due string
----@return boolean
-local function is_due_or_overdue(due)
-  local now = os.date('*t') --[[@as osdate]]
-  local today = os.date('%Y-%m-%d') --[[@as string]]
-  local date_part, time_part = due:match('^(.+)T(.+)$')
-  if not date_part then
-    return due <= today
-  end
-  if date_part < today then
-    return true
-  end
-  if date_part > today then
-    return false
-  end
-  local current_time = string.format('%02d:%02d', now.hour, now.min)
-  return time_part <= current_time
-end
-
----@param due string
----@return boolean
-local function is_overdue(due)
-  local now = os.date('*t') --[[@as osdate]]
-  local today = os.date('%Y-%m-%d') --[[@as string]]
-  local date_part, time_part = due:match('^(.+)T(.+)$')
-  if not date_part then
-    return due < today
-  end
-  if date_part < today then
-    return true
-  end
-  if date_part > today then
-    return false
-  end
-  local current_time = string.format('%02d:%02d', now.hour, now.min)
-  return time_part < current_time
-end
-
----@return nil
 function M.due()
+  local today = os.date('%Y-%m-%d') --[[@as string]]
   local bufnr = buffer.bufnr()
   local is_valid = bufnr ~= nil and vim.api.nvim_buf_is_valid(bufnr)
   local meta = is_valid and buffer.meta() or nil
@@ -356,9 +307,9 @@ function M.due()
 
   if meta and bufnr then
     for lnum, m in ipairs(meta) do
-      if m.type == 'task' and m.raw_due and m.status ~= 'done' and is_due_or_overdue(m.raw_due) then
+      if m.type == 'task' and m.raw_due and m.status ~= 'done' and m.raw_due <= today then
         local task = store.get(m.id or 0)
-        local label = is_overdue(m.raw_due) and '[OVERDUE] ' or '[DUE] '
+        local label = m.raw_due < today and '[OVERDUE] ' or '[DUE] '
         table.insert(qf_items, {
           bufnr = bufnr,
           lnum = lnum,
@@ -370,8 +321,8 @@ function M.due()
   else
     store.load()
     for _, task in ipairs(store.active_tasks()) do
-      if task.status == 'pending' and task.due and is_due_or_overdue(task.due) then
-        local label = is_overdue(task.due) and '[OVERDUE] ' or '[DUE] '
+      if task.status == 'pending' and task.due and task.due <= today then
+        local label = task.due < today and '[OVERDUE] ' or '[DUE] '
         local text = label .. task.description
         if task.category then
           text = text .. ' [' .. task.category .. ']'
@@ -391,7 +342,6 @@ function M.due()
 end
 
 ---@param args string
----@return nil
 function M.command(args)
   if not args or args == '' then
     M.open()
diff --git a/lua/pending/parse.lua b/lua/pending/parse.lua
index e234269..853fa2c 100644
--- a/lua/pending/parse.lua
+++ b/lua/pending/parse.lua
@@ -24,82 +24,6 @@ local function is_valid_date(s)
   return check.year == yn and check.month == mn and check.day == dn
 end
 
----@param s string
----@return boolean
-local function is_valid_time(s)
-  local h, m = s:match('^(%d%d):(%d%d)$')
-  if not h then
-    return false
-  end
-  local hn = tonumber(h) --[[@as integer]]
-  local mn = tonumber(m) --[[@as integer]]
-  return hn >= 0 and hn <= 23 and mn >= 0 and mn <= 59
-end
-
----@param s string
----@return string|nil
-local function normalize_time(s)
-  local h, m, period
-
-  h, m, period = s:match('^(%d+):(%d%d)([ap]m)$')
-  if not h then
-    h, period = s:match('^(%d+)([ap]m)$')
-    if h then
-      m = '00'
-    end
-  end
-  if not h then
-    h, m = s:match('^(%d%d):(%d%d)$')
-  end
-  if not h then
-    h, m = s:match('^(%d):(%d%d)$')
-  end
-  if not h then
-    h = s:match('^(%d+)$')
-    if h then
-      m = '00'
-    end
-  end
-
-  if not h then
-    return nil
-  end
-
-  local hn = tonumber(h) --[[@as integer]]
-  local mn = tonumber(m) --[[@as integer]]
-
-  if period then
-    if hn < 1 or hn > 12 then
-      return nil
-    end
-    if period == 'am' then
-      hn = hn == 12 and 0 or hn
-    else
-      hn = hn == 12 and 12 or hn + 12
-    end
-  else
-    if hn < 0 or hn > 23 then
-      return nil
-    end
-  end
-
-  if mn < 0 or mn > 59 then
-    return nil
-  end
-
-  return string.format('%02d:%02d', hn, mn)
-end
-
----@param s string
----@return boolean
-local function is_valid_datetime(s)
-  local date_part, time_part = s:match('^(.+)T(.+)$')
-  if not date_part then
-    return is_valid_date(s)
-  end
-  return is_valid_date(date_part) and is_valid_time(time_part)
-end
-
 ---@return string
 local function date_key()
   return config.get().date_syntax or 'due'
@@ -141,218 +65,146 @@ local function today_str(today)
   return os.date('%Y-%m-%d', os.time({ year = today.year, month = today.month, day = today.day })) --[[@as string]]
 end
 
----@param date_part string
----@param time_suffix? string
----@return string
-local function append_time(date_part, time_suffix)
-  if time_suffix then
-    return date_part .. 'T' .. time_suffix
-  end
-  return date_part
-end
-
 ---@param text string
 ---@return string|nil
 function M.resolve_date(text)
-  local date_input, time_suffix = text:match('^(.+)@(.+)$')
-  if time_suffix then
-    time_suffix = normalize_time(time_suffix)
-    if not time_suffix then
-      return nil
-    end
-  else
-    date_input = text
-  end
-
-  local dt = date_input:match('^(%d%d%d%d%-%d%d%-%d%dT%d%d:%d%d)$')
-  if dt then
-    local dp, tp = dt:match('^(.+)T(.+)$')
-    if is_valid_date(dp) and is_valid_time(tp) then
-      return dt
-    end
-    return nil
-  end
-
-  if is_valid_date(date_input) then
-    return append_time(date_input, time_suffix)
-  end
-
-  local lower = date_input:lower()
+  local lower = text:lower()
   local today = os.date('*t') --[[@as osdate]]
 
   if lower == 'today' or lower == 'eod' then
-    return append_time(today_str(today), time_suffix)
+    return today_str(today)
   end
 
   if lower == 'yesterday' then
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = today.month, day = today.day - 1 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({ year = today.year, month = today.month, day = today.day - 1 })
+    ) --[[@as string]]
   end
 
   if lower == 'tomorrow' then
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = today.month, day = today.day + 1 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({ year = today.year, month = today.month, day = today.day + 1 })
+    ) --[[@as string]]
   end
 
   if lower == 'sow' then
     local delta = -((today.wday - 2) % 7)
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({ year = today.year, month = today.month, day = today.day + delta })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({ year = today.year, month = today.month, day = today.day + delta })
+    ) --[[@as string]]
   end
 
   if lower == 'eow' then
     local delta = (1 - today.wday) % 7
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({ year = today.year, month = today.month, day = today.day + delta })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({ year = today.year, month = today.month, day = today.day + delta })
+    ) --[[@as string]]
   end
 
   if lower == 'som' then
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = today.month, day = 1 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date('%Y-%m-%d', os.time({ year = today.year, month = today.month, day = 1 })) --[[@as string]]
   end
 
   if lower == 'eom' then
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = today.month + 1, day = 0 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date('%Y-%m-%d', os.time({ year = today.year, month = today.month + 1, day = 0 })) --[[@as string]]
   end
 
   if lower == 'soq' then
     local q = math.ceil(today.month / 3)
     local first_month = (q - 1) * 3 + 1
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = first_month, day = 1 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date('%Y-%m-%d', os.time({ year = today.year, month = first_month, day = 1 })) --[[@as string]]
   end
 
   if lower == 'eoq' then
     local q = math.ceil(today.month / 3)
     local last_month = q * 3
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = last_month + 1, day = 0 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date('%Y-%m-%d', os.time({ year = today.year, month = last_month + 1, day = 0 })) --[[@as string]]
   end
 
   if lower == 'soy' then
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = 1, day = 1 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date('%Y-%m-%d', os.time({ year = today.year, month = 1, day = 1 })) --[[@as string]]
   end
 
   if lower == 'eoy' then
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = today.year, month = 12, day = 31 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date('%Y-%m-%d', os.time({ year = today.year, month = 12, day = 31 })) --[[@as string]]
   end
 
   if lower == 'later' or lower == 'someday' then
-    return append_time(config.get().someday_date, time_suffix)
+    return config.get().someday_date
   end
 
   local n = lower:match('^%+(%d+)d$')
   if n then
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({
-          year = today.year,
-          month = today.month,
-          day = today.day + (
-              tonumber(n) --[[@as integer]]
-            ),
-        })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({
+        year = today.year,
+        month = today.month,
+        day = today.day + (
+            tonumber(n) --[[@as integer]]
+          ),
+      })
+    ) --[[@as string]]
   end
 
   n = lower:match('^%+(%d+)w$')
   if n then
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({
-          year = today.year,
-          month = today.month,
-          day = today.day + (
-              tonumber(n) --[[@as integer]]
-            ) * 7,
-        })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({
+        year = today.year,
+        month = today.month,
+        day = today.day + (
+            tonumber(n) --[[@as integer]]
+          ) * 7,
+      })
+    ) --[[@as string]]
   end
 
   n = lower:match('^%+(%d+)m$')
   if n then
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({
-          year = today.year,
-          month = today.month + (
-              tonumber(n) --[[@as integer]]
-            ),
-          day = today.day,
-        })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({
+        year = today.year,
+        month = today.month + (
+            tonumber(n) --[[@as integer]]
+          ),
+        day = today.day,
+      })
+    ) --[[@as string]]
   end
 
   n = lower:match('^%-(%d+)d$')
   if n then
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({
-          year = today.year,
-          month = today.month,
-          day = today.day - (
-              tonumber(n) --[[@as integer]]
-            ),
-        })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({
+        year = today.year,
+        month = today.month,
+        day = today.day - (
+            tonumber(n) --[[@as integer]]
+          ),
+      })
+    ) --[[@as string]]
   end
 
   n = lower:match('^%-(%d+)w$')
   if n then
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({
-          year = today.year,
-          month = today.month,
-          day = today.day - (
-              tonumber(n) --[[@as integer]]
-            ) * 7,
-        })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({
+        year = today.year,
+        month = today.month,
+        day = today.day - (
+            tonumber(n) --[[@as integer]]
+          ) * 7,
+      })
+    ) --[[@as string]]
   end
 
   local ord = lower:match('^(%d+)[snrt][tdh]$')
@@ -370,7 +222,7 @@ function M.resolve_date(text)
       local t = os.time({ year = y, month = m, day = day_num })
       local check = os.date('*t', t) --[[@as osdate]]
       if check.day == day_num then
-        return append_time(os.date('%Y-%m-%d', t) --[[@as string]], time_suffix)
+        return os.date('%Y-%m-%d', t) --[[@as string]]
       end
       m = m + 1
       if m > 12 then
@@ -380,7 +232,7 @@ function M.resolve_date(text)
       t = os.time({ year = y, month = m, day = day_num })
       check = os.date('*t', t) --[[@as osdate]]
       if check.day == day_num then
-        return append_time(os.date('%Y-%m-%d', t) --[[@as string]], time_suffix)
+        return os.date('%Y-%m-%d', t) --[[@as string]]
       end
       return nil
     end
@@ -392,23 +244,17 @@ function M.resolve_date(text)
     if today.month >= target_month then
       y = y + 1
     end
-    return append_time(
-      os.date('%Y-%m-%d', os.time({ year = y, month = target_month, day = 1 })) --[[@as string]],
-      time_suffix
-    )
+    return os.date('%Y-%m-%d', os.time({ year = y, month = target_month, day = 1 })) --[[@as string]]
   end
 
   local target_wday = weekday_map[lower]
   if target_wday then
     local current_wday = today.wday
     local delta = (target_wday - current_wday) % 7
-    return append_time(
-      os.date(
-        '%Y-%m-%d',
-        os.time({ year = today.year, month = today.month, day = today.day + delta })
-      ) --[[@as string]],
-      time_suffix
-    )
+    return os.date(
+      '%Y-%m-%d',
+      os.time({ year = today.year, month = today.month, day = today.day + delta })
+    ) --[[@as string]]
   end
 
   return nil
@@ -427,7 +273,7 @@ function M.body(text)
   local i = #tokens
   local dk = date_key()
   local rk = recur_key()
-  local date_pattern_strict = '^' .. vim.pesc(dk) .. ':(%d%d%d%d%-%d%d%-%d%d[T%d:]*)$'
+  local date_pattern_strict = '^' .. vim.pesc(dk) .. ':(%d%d%d%d%-%d%d%-%d%d)$'
   local date_pattern_any = '^' .. vim.pesc(dk) .. ':(.+)$'
   local rec_pattern = '^' .. vim.pesc(rk) .. ':(%S+)$'
 
@@ -438,7 +284,7 @@ function M.body(text)
       if metadata.due then
         break
       end
-      if not is_valid_datetime(due_val) then
+      if not is_valid_date(due_val) then
         break
       end
       metadata.due = due_val
diff --git a/lua/pending/recur.lua b/lua/pending/recur.lua
index 9c647aa..c0a2091 100644
--- a/lua/pending/recur.lua
+++ b/lua/pending/recur.lua
@@ -80,33 +80,20 @@ function M.validate(spec)
   return M.parse(spec) ~= nil
 end
 
----@param due string
----@return string date_part
----@return string? time_part
-local function split_datetime(due)
-  local dp, tp = due:match('^(.+)T(.+)$')
-  if dp then
-    return dp, tp
-  end
-  return due, nil
-end
-
 ---@param base_date string
 ---@param freq string
 ---@param interval integer
 ---@return string
 local function advance_date(base_date, freq, interval)
-  local date_part, time_part = split_datetime(base_date)
-  local y, m, d = date_part:match('^(%d+)-(%d+)-(%d+)$')
+  local y, m, d = base_date:match('^(%d+)-(%d+)-(%d+)$')
   local yn = tonumber(y) --[[@as integer]]
   local mn = tonumber(m) --[[@as integer]]
   local dn = tonumber(d) --[[@as integer]]
 
-  local result
   if freq == 'daily' then
-    result = os.date('%Y-%m-%d', os.time({ year = yn, month = mn, day = dn + interval })) --[[@as string]]
+    return os.date('%Y-%m-%d', os.time({ year = yn, month = mn, day = dn + interval })) --[[@as string]]
   elseif freq == 'weekly' then
-    result = os.date('%Y-%m-%d', os.time({ year = yn, month = mn, day = dn + interval * 7 })) --[[@as string]]
+    return os.date('%Y-%m-%d', os.time({ year = yn, month = mn, day = dn + interval * 7 })) --[[@as string]]
   elseif freq == 'monthly' then
     local new_m = mn + interval
     local new_y = yn
@@ -116,20 +103,14 @@ local function advance_date(base_date, freq, interval)
     end
     local last_day = os.date('*t', os.time({ year = new_y, month = new_m + 1, day = 0 })) --[[@as osdate]]
     local clamped_d = math.min(dn, last_day.day --[[@as integer]])
-    result = os.date('%Y-%m-%d', os.time({ year = new_y, month = new_m, day = clamped_d })) --[[@as string]]
+    return os.date('%Y-%m-%d', os.time({ year = new_y, month = new_m, day = clamped_d })) --[[@as string]]
   elseif freq == 'yearly' then
     local new_y = yn + interval
     local last_day = os.date('*t', os.time({ year = new_y, month = mn + 1, day = 0 })) --[[@as osdate]]
     local clamped_d = math.min(dn, last_day.day --[[@as integer]])
-    result = os.date('%Y-%m-%d', os.time({ year = new_y, month = mn, day = clamped_d })) --[[@as string]]
-  else
-    return base_date
+    return os.date('%Y-%m-%d', os.time({ year = new_y, month = mn, day = clamped_d })) --[[@as string]]
   end
-
-  if time_part then
-    return result .. 'T' .. time_part
-  end
-  return result
+  return base_date
 end
 
 ---@param base_date string
@@ -143,16 +124,13 @@ function M.next_due(base_date, spec, mode)
   end
 
   local today = os.date('%Y-%m-%d') --[[@as string]]
-  local _, time_part = split_datetime(base_date)
 
   if mode == 'completion' then
-    local base = time_part and (today .. 'T' .. time_part) or today
-    return advance_date(base, parsed.freq, parsed.interval)
+    return advance_date(today, parsed.freq, parsed.interval)
   end
 
   local next_date = advance_date(base_date, parsed.freq, parsed.interval)
-  local compare_today = time_part and (today .. 'T' .. time_part) or today
-  while next_date <= compare_today do
+  while next_date <= today do
     next_date = advance_date(next_date, parsed.freq, parsed.interval)
   end
   return next_date
diff --git a/lua/pending/store.lua b/lua/pending/store.lua
index c9e9b45..4f3d2f1 100644
--- a/lua/pending/store.lua
+++ b/lua/pending/store.lua
@@ -19,7 +19,6 @@ local config = require('pending.config')
 ---@field version integer
 ---@field next_id integer
 ---@field tasks pending.Task[]
----@field undo pending.Task[][]
 
 ---@class pending.store
 local M = {}
@@ -35,7 +34,6 @@ local function empty_data()
     version = SUPPORTED_VERSION,
     next_id = 1,
     tasks = {},
-    undo = {},
   }
 end
 
@@ -167,24 +165,13 @@ function M.load()
     version = decoded.version or SUPPORTED_VERSION,
     next_id = decoded.next_id or 1,
     tasks = {},
-    undo = {},
   }
   for _, t in ipairs(decoded.tasks or {}) do
     table.insert(_data.tasks, table_to_task(t))
   end
-  for _, snapshot in ipairs(decoded.undo or {}) do
-    if type(snapshot) == 'table' then
-      local tasks = {}
-      for _, raw in ipairs(snapshot) do
-        table.insert(tasks, table_to_task(raw))
-      end
-      table.insert(_data.undo, tasks)
-    end
-  end
   return _data
 end
 
----@return nil
 function M.save()
   if not _data then
     return
@@ -195,18 +182,10 @@ function M.save()
     version = _data.version,
     next_id = _data.next_id,
     tasks = {},
-    undo = {},
   }
   for _, task in ipairs(_data.tasks) do
     table.insert(out.tasks, task_to_table(task))
   end
-  for _, snapshot in ipairs(_data.undo) do
-    local serialized = {}
-    for _, task in ipairs(snapshot) do
-      table.insert(serialized, task_to_table(task))
-    end
-    table.insert(out.undo, serialized)
-  end
   local encoded = vim.json.encode(out)
   local tmp = path .. '.tmp'
   local f = io.open(tmp, 'w')
@@ -321,7 +300,6 @@ function M.find_index(id)
 end
 
 ---@param tasks pending.Task[]
----@return nil
 function M.replace_tasks(tasks)
   M.data().tasks = tasks
 end
@@ -347,24 +325,11 @@ function M.snapshot()
   return result
 end
 
----@return pending.Task[][]
-function M.undo_stack()
-  return M.data().undo
-end
-
----@param stack pending.Task[][]
----@return nil
-function M.set_undo_stack(stack)
-  M.data().undo = stack
-end
-
 ---@param id integer
----@return nil
 function M.set_next_id(id)
   M.data().next_id = id
 end
 
----@return nil
 function M.unload()
   _data = nil
 end
diff --git a/lua/pending/views.lua b/lua/pending/views.lua
index a9f56bf..17a7a37 100644
--- a/lua/pending/views.lua
+++ b/lua/pending/views.lua
@@ -21,10 +21,7 @@ local function format_due(due)
   if not due then
     return nil
   end
-  local y, m, d, hh, mm = due:match('^(%d%d%d%d)-(%d%d)-(%d%d)T(%d%d):(%d%d)$')
-  if not y then
-    y, m, d = due:match('^(%d%d%d%d)-(%d%d)-(%d%d)$')
-  end
+  local y, m, d = due:match('^(%d%d%d%d)-(%d%d)-(%d%d)$')
   if not y then
     return due
   end
@@ -33,30 +30,7 @@ local function format_due(due)
     month = tonumber(m) --[[@as integer]],
     day = tonumber(d) --[[@as integer]],
   })
-  local formatted = os.date(config.get().date_format, t) --[[@as string]]
-  if hh then
-    formatted = formatted .. ' ' .. hh .. ':' .. mm
-  end
-  return formatted
-end
-
----@param due string
----@return boolean
-local function is_overdue(due)
-  local now = os.date('*t') --[[@as osdate]]
-  local today = os.date('%Y-%m-%d') --[[@as string]]
-  local date_part, time_part = due:match('^(.+)T(.+)$')
-  if not date_part then
-    return due < today
-  end
-  if date_part < today then
-    return true
-  end
-  if date_part > today then
-    return false
-  end
-  local current_time = string.format('%02d:%02d', now.hour, now.min)
-  return time_part < current_time
+  return os.date(config.get().date_format, t) --[[@as string]]
 end
 
 ---@param tasks pending.Task[]
@@ -100,6 +74,7 @@ end
 ---@return string[] lines
 ---@return pending.LineMeta[] meta
 function M.category_view(tasks)
+  local today = os.date('%Y-%m-%d') --[[@as string]]
   local by_cat = {}
   local cat_order = {}
   local cat_seen = {}
@@ -174,7 +149,7 @@ function M.category_view(tasks)
         raw_due = task.due,
         status = task.status,
         category = cat,
-        overdue = task.status == 'pending' and task.due ~= nil and is_overdue(task.due) or nil,
+        overdue = task.status == 'pending' and task.due ~= nil and task.due < today or nil,
         recur = task.recur,
       })
     end
@@ -187,6 +162,7 @@ end
 ---@return string[] lines
 ---@return pending.LineMeta[] meta
 function M.priority_view(tasks)
+  local today = os.date('%Y-%m-%d') --[[@as string]]
   local pending = {}
   local done = {}
 
@@ -224,7 +200,7 @@ function M.priority_view(tasks)
       raw_due = task.due,
       status = task.status,
       category = task.category,
-      overdue = task.status == 'pending' and task.due ~= nil and is_overdue(task.due) or nil,
+      overdue = task.status == 'pending' and task.due ~= nil and task.due < today or nil,
       show_category = true,
       recur = task.recur,
     })
diff --git a/spec/parse_spec.lua b/spec/parse_spec.lua
index fd36d68..edeffcd 100644
--- a/spec/parse_spec.lua
+++ b/spec/parse_spec.lua
@@ -323,75 +323,6 @@ describe('parse', function()
     end)
   end)
 
-  describe('resolve_date with time suffix', function()
-    local today = os.date('*t') --[[@as osdate]]
-    local tomorrow_str = os.date(
-      '%Y-%m-%d',
-      os.time({ year = today.year, month = today.month, day = today.day + 1 })
-    ) --[[@as string]]
-
-    it('resolves bare hour to T09:00', function()
-      local result = parse.resolve_date('tomorrow@9')
-      assert.are.equal(tomorrow_str .. 'T09:00', result)
-    end)
-
-    it('resolves bare military hour to T14:00', function()
-      local result = parse.resolve_date('tomorrow@14')
-      assert.are.equal(tomorrow_str .. 'T14:00', result)
-    end)
-
-    it('resolves H:MM to T09:30', function()
-      local result = parse.resolve_date('tomorrow@9:30')
-      assert.are.equal(tomorrow_str .. 'T09:30', result)
-    end)
-
-    it('resolves HH:MM (existing format) to T09:30', function()
-      local result = parse.resolve_date('tomorrow@09:30')
-      assert.are.equal(tomorrow_str .. 'T09:30', result)
-    end)
-
-    it('resolves 2pm to T14:00', function()
-      local result = parse.resolve_date('tomorrow@2pm')
-      assert.are.equal(tomorrow_str .. 'T14:00', result)
-    end)
-
-    it('resolves 9am to T09:00', function()
-      local result = parse.resolve_date('tomorrow@9am')
-      assert.are.equal(tomorrow_str .. 'T09:00', result)
-    end)
-
-    it('resolves 9:30pm to T21:30', function()
-      local result = parse.resolve_date('tomorrow@9:30pm')
-      assert.are.equal(tomorrow_str .. 'T21:30', result)
-    end)
-
-    it('resolves 12am to T00:00', function()
-      local result = parse.resolve_date('tomorrow@12am')
-      assert.are.equal(tomorrow_str .. 'T00:00', result)
-    end)
-
-    it('resolves 12pm to T12:00', function()
-      local result = parse.resolve_date('tomorrow@12pm')
-      assert.are.equal(tomorrow_str .. 'T12:00', result)
-    end)
-
-    it('rejects hour 24', function()
-      assert.is_nil(parse.resolve_date('tomorrow@24'))
-    end)
-
-    it('rejects 13am', function()
-      assert.is_nil(parse.resolve_date('tomorrow@13am'))
-    end)
-
-    it('rejects minute 60', function()
-      assert.is_nil(parse.resolve_date('tomorrow@9:60'))
-    end)
-
-    it('rejects alphabetic garbage', function()
-      assert.is_nil(parse.resolve_date('tomorrow@abc'))
-    end)
-  end)
-
   describe('command_add', function()
     it('parses simple text', function()
       local desc, meta = parse.command_add('Buy milk')