diff --git a/plugins/dates/src/api/parse/one/01-tokenize/01-shift.js b/plugins/dates/src/api/parse/one/01-tokenize/01-shift.js
new file mode 100644
index 0000000..0aa8488
--- /dev/null
+++ b/plugins/dates/src/api/parse/one/01-tokenize/01-shift.js
@@ -0,0 +1,128 @@
+const knownUnits = {
+  second: true,
+  minute: true,
+  hour: true,
+  day: true,
+  week: true,
+  weekend: true,
+  month: true,
+  season: true,
+  quarter: true,
+  year: true,
+}
+
+const aliases = {
+  wk: 'week',
+  min: 'minute',
+  sec: 'second',
+  weekend: 'week', //for now...
+}
+
+// half of a unit, in smaller whole units
+const halfUnits = {
+  year: [6, 'month'],
+  quarter: [45, 'day'],
+  season: [45, 'day'],
+  month: [15, 'day'],
+  week: [84, 'hour'],
+  day: [12, 'hour'],
+  hour: [30, 'minute'],
+  minute: [30, 'second'],
+}
+
+const parseUnit = function (m) {
+  let unit = m.match('#Duration').text('normal')
+  unit = unit.replace(/s$/, '')
+  // support shorthands like 'min'
+  if (Object.hasOwn(aliases, unit)) {
+    unit = aliases[unit]
+  }
+  return unit
+}
+
+//turn '5 weeks before' to {weeks:5}
+const parseShift = function (doc) {
+  const result = {}
+  let m = doc.none()
+  let shift = doc.match('#DateShift+')
+  if (shift.found === false) {
+    return { result, m }
+  }
+  //is it 2 weeks ago?  → -2  ('hence' means the future)
+  const isNegative = shift.has('(before|ago|back)$') === true
+
+  // '5 weeks'
+  shift.match('#Cardinal #Duration').forEach((ts) => {
+    const num = ts.match('#Cardinal').numbers().get()[0]
+    if (num && typeof num === 'number') {
+      const unit = parseUnit(ts)
+      if (knownUnits[unit] === true) {
+        result[unit] = isNegative ? num * -1 : num
+      }
+    }
+  })
+  m = shift.match('#Cardinal #Duration')
+  shift = shift.not(m)
+
+  // supoprt '1 day after tomorrow'
+  m = shift.match('[<unit>#Duration] [<dir>(after|before)]')
+  if (m.found) {
+    const unit = m.groups('unit').text('reduced')
+    // unit = unit.replace(/s$/, '')
+    const dir = m.groups('dir').text('reduced')
+    if (dir === 'after') {
+      result[unit] = 1
+    } else if (dir === 'before') {
+      result[unit] = -1
+    }
+  }
+
+  // in half an hour
+  m = shift.match('half (a|an) [#Duration]', 0)
+  if (m.found) {
+    const unit = parseUnit(m)
+    if (knownUnits[unit] === true) {
+      result[unit] = isNegative ? -0.5 : 0.5
+    }
+  }
+
+  // a few years / a couple of weeks
+  m = shift.match('a [<amt>(few|couple)] of? [<unit>#Duration]')
+  if (m.found) {
+    const unit = parseUnit(m.groups('unit'))
+    if (knownUnits[unit] === true) {
+      const num = m.groups('amt').has('few') ? 3 : 2
+      result[unit] = isNegative ? num * -1 : num
+    }
+  }
+
+  // '2 weeks and a half'
+  m = doc.match('[<unit>#Duration] and a half')
+  if (m.found) {
+    const unit = parseUnit(m.groups('unit'))
+    if (knownUnits[unit] === true && result[unit] !== undefined) {
+      result[unit] += isNegative ? -0.5 : 0.5
+    }
+  }
+
+  // spacetime drops fractional units - swap a half-unit for smaller whole units
+  Object.keys(result).forEach((k) => {
+    const whole = Math.trunc(result[k])
+    const frac = result[k] - whole
+    if (frac === 0.5 || frac === -0.5) {
+      const [num, smaller] = halfUnits[k] || []
+      if (smaller) {
+        result[k] = whole
+        result[smaller] = (result[smaller] || 0) + (frac > 0 ? num : num * -1)
+        if (result[k] === 0) {
+          delete result[k]
+        }
+      }
+    }
+  })
+
+  // finally, remove it from our text
+  m = doc.match('#DateShift+')
+  return { result, m }
+}
+export default parseShift
diff --git a/plugins/dates/tests/regressions.test.js b/plugins/dates/tests/regressions.test.js
new file mode 100644
index 0000000..13fec18
--- /dev/null
+++ b/plugins/dates/tests/regressions.test.js
@@ -0,0 +1,169 @@
+import test from 'tape'
+import nlp from './_lib.js'
+
+const context = {
+  today: '2026-07-11', //saturday
+  timezone: 'America/New_York',
+}
+const getStart = (str, ctx = context) => {
+  const res = nlp(str).dates(ctx).get()[0]
+  return res ? res.start : null
+}
+const getEnd = (str, ctx = context) => {
+  const res = nlp(str).dates(ctx).get()[0]
+  return res ? res.end : null
+}
+
+test('holidays honor an explicit year', (t) => {
+  // easter 2026 already happened - but the year is explicit
+  t.equal(getStart('easter 2026'), '2026-04-05T00:00:00.000-04:00', 'easter 2026')
+  t.equal(getStart('easter 2030'), '2030-04-21T00:00:00.000-04:00', 'easter 2030')
+  t.equal(getStart('thanksgiving 2021'), '2021-11-25T00:00:00.000-05:00', 'thanksgiving 2021')
+  // asking on the day itself, in the afternoon
+  const xmas = { today: '2026-12-25T13:00:00', timezone: 'America/New_York' }
+  t.equal(getStart('christmas', xmas), '2026-12-25T00:00:00.000-05:00', 'christmas on christmas-day')
+  t.end()
+})
+
+test('overnight time-ranges cross midnight', (t) => {
+  t.equal(getStart('from 10pm to 2am'), '2026-07-11T22:00:00.000-04:00', '10pm-2am start')
+  t.equal(getEnd('from 10pm to 2am'), '2026-07-12T02:00:00.000-04:00', '10pm-2am end')
+  // explicit 'am' should not become pm
+  t.equal(getStart('11pm to 2am january 5th'), '2027-01-05T23:00:00.000-05:00', 'explicit-am start')
+  t.equal(getEnd('11pm to 2am january 5th'), '2027-01-06T02:00:00.000-05:00', 'explicit-am end')
+  t.end()
+})
+
+test('between-ranges are forward-ordered', (t) => {
+  // was: a reversed range with negative duration
+  t.equal(getStart('between friday and sunday'), '2026-07-17T00:00:00.000-04:00', 'starts friday')
+  t.equal(getEnd('between friday and sunday'), '2026-07-18T23:59:59.999-04:00', 'ends before sunday')
+  // 'between june 2nd and 5th' - inherit the month
+  t.equal(getStart('between june 2nd and 5th'), '2027-06-02T00:00:00.000-04:00', 'shared-month start')
+  t.equal(getEnd('between june 2nd and 5th'), '2027-06-04T23:59:59.999-04:00', 'shared-month end')
+  t.end()
+})
+
+test('end of the month', (t) => {
+  t.equal(getStart('end of the month'), '2026-07-31T23:59:59.999-04:00', 'end of the month')
+  t.equal(getStart('start of the month'), '2026-07-01T00:00:00.000-04:00', 'start of the month')
+  t.equal(getStart('end of the year'), '2026-12-31T23:59:59.999-05:00', 'end of the year')
+  t.end()
+})
+
+test('day after next', (t) => {
+  t.equal(getStart('day after next'), '2026-07-13T00:00:00.000-04:00', 'day after next')
+  t.equal(getStart('the week after next'), '2026-07-20T00:00:00.000-04:00', 'week after next')
+  t.equal(getStart('the weekend after next'), '2026-07-25T00:00:00.000-04:00', 'weekend after next')
+  const wed = { today: '2026-07-08', timezone: 'America/New_York' }
+  t.equal(getStart('the saturday after next', wed), '2026-07-18T00:00:00.000-04:00', 'saturday after next')
+  t.end()
+})
+
+test('next-month wraps the year', (t) => {
+  const dec = { today: '2026-12-10', timezone: 'America/New_York' }
+  t.equal(getStart('the 5th of next month', dec), '2027-01-05T00:00:00.000-05:00', 'next month in december')
+  const jan = { today: '2026-01-10', timezone: 'America/New_York' }
+  t.equal(getStart('the 5th of last month', jan), '2025-12-05T00:00:00.000-05:00', 'last month in january')
+  t.end()
+})
+
+test('relative shifts', (t) => {
+  t.equal(getStart('two weeks hence'), '2026-07-25T00:00:00.000-04:00', 'hence is the future')
+  t.equal(getStart('in a few weeks'), '2026-08-01T00:00:00.000-04:00', 'a few is 3')
+  t.equal(getStart('in a couple of weeks'), '2026-07-25T00:00:00.000-04:00', 'a couple of')
+  t.equal(getStart('a few days ago'), '2026-07-08T00:00:00.000-04:00', 'a few days ago')
+  const noon = { today: '2026-07-11T12:00:00', timezone: 'America/New_York' }
+  t.equal(getStart('in half an hour', noon), '2026-07-11T12:30:00.000-04:00', 'half an hour is 30min')
+  t.equal(getStart('half an hour ago', noon), '2026-07-11T11:30:00.000-04:00', 'half an hour ago')
+  t.equal(getStart('2 years, 4 months, and 5 days ago'), '2024-03-06T00:00:00.000-05:00', 'multi-unit shift')
+  t.equal(getStart('a week and a half before'), '2026-06-30T12:00:00.000-04:00', 'a week and a half')
+  t.equal(getStart('in a year and a half'), '2028-01-11T00:00:00.000-05:00', 'in a year and a half')
+  t.end()
+})
+
+test('nth weekday of month', (t) => {
+  const ctx = { today: '2021-01-01', timezone: 'America/New_York' }
+  t.equal(getStart('the second monday of february', ctx), '2021-02-08T00:00:00.000-05:00', '2nd monday')
+  t.equal(getStart('first monday of february', ctx), '2021-02-01T00:00:00.000-05:00', 'first monday')
+  t.equal(getStart('last monday of february', ctx), '2021-02-22T00:00:00.000-05:00', 'last monday')
+  const jan = { today: '2026-01-11', timezone: 'America/New_York' }
+  t.equal(getStart('2nd weekend of june', jan), '2026-06-13T00:00:00.000-04:00', '2nd weekend')
+  t.end()
+})
+
+test('march/may as verbs', (t) => {
+  t.equal(getStart('the soldiers march tomorrow'), '2026-07-12T00:00:00.000-04:00', 'march tomorrow → tomorrow')
+  t.equal(getStart('you may tomorrow find peace'), '2026-07-12T00:00:00.000-04:00', 'may tomorrow → tomorrow')
+  t.equal(getStart('may 2020'), '2020-05-01T00:00:00.000-04:00', 'may 2020 still works')
+  t.equal(getStart('march 5th'), '2027-03-05T00:00:00.000-05:00', 'march 5th still works')
+  t.end()
+})
+
+test('quarter-to times', (t) => {
+  t.equal(getStart('quarter to five'), '2026-07-11T16:45:00.000-04:00', 'quarter to five')
+  t.equal(getStart('at quarter to five'), '2026-07-11T16:45:00.000-04:00', 'at quarter to five')
+  t.equal(getStart('at ten to 4'), '2026-07-11T15:50:00.000-04:00', 'at ten to 4')
+  t.end()
+})
+
+test('year windows', (t) => {
+  t.equal(getStart('2030'), '2030-01-01T00:00:00.000-05:00', 'bare 2030')
+  t.equal(getStart('2045'), '2045-01-01T00:00:00.000-05:00', 'bare 2045')
+  t.equal(getStart(`june of '98`), '1998-06-01T00:00:00.000-04:00', `june of '98`)
+  t.equal(getStart(`summer of '69`), '1969-06-01T00:00:00.000-04:00', `summer of '69`)
+  t.equal(getStart('may 97'), '1997-05-01T00:00:00.000-04:00', 'may 97')
+  t.end()
+})
+
+test('timezone handling', (t) => {
+  t.equal(getStart('4pm JST'), '2026-07-11T16:00:00.000+09:00', 'jst resolves')
+  t.equal(getStart('4pm SGT'), '2026-07-11T16:00:00.000+08:00', 'sgt resolves')
+  t.equal(getStart('4pm GMT+9'), '2026-07-11T16:00:00.000+09:00', 'gmt+9 is utc+9')
+  t.equal(getStart('3pm utc-5'), '2026-07-11T15:00:00.000-05:00', 'utc-5')
+  t.equal(getStart('5pm utc+13'), '2026-07-11T17:00:00.000+13:00', 'utc+13')
+  // an unknown zone should not kill the parse
+  t.equal(getStart('4pm XQZT'), '2026-07-11T16:00:00.000-04:00', 'unknown zone is non-fatal')
+  t.equal(getStart('3pm cst'), '2026-07-11T15:00:00.000-05:00', 'cst is chicago')
+  t.equal(getStart('3pm central time'), '2026-07-11T15:00:00.000-05:00', 'central time')
+  const notMidnight = { today: '2026-07-11T15:00:00', timezone: 'America/New_York' }
+  t.equal(getStart('now pst', notMidnight), '2026-07-11T15:00:00.000-07:00', 'now pst keeps the time')
+  t.end()
+})
+
+test('repeating dates surface in json', (t) => {
+  const res = nlp('every tuesday').dates(context).get()
+  t.equal(res.length, 1, 'every tuesday found')
+  t.ok(res[0].repeat, 'has repeat info')
+  t.ok(res[0].repeat.filter.weekDays.tuesday, 'tuesday filter')
+  const july = nlp('weekends in july').dates(context).get()[0]
+  t.ok(july.repeat && july.repeat.filter.weekDays.saturday, 'weekends in july')
+  t.equal(july.start, '2026-07-01T00:00:00.000-04:00', 'july range start')
+  t.end()
+})
+
+test('unit field', (t) => {
+  const res = nlp('june 9th 2012').dates(context).get()[0]
+  t.equal(res.unit, 'day', 'june 9th is a day')
+  const range = nlp('jan 1 to dec 31').dates(context).get()[0]
+  t.equal(range.unit, 'year', 'jan 1 to dec 31 is a year')
+  t.end()
+})
+
+test('times api shape', (t) => {
+  t.deepEqual(nlp('hello world').times().get(), [], 'empty is an array')
+  const one = nlp('at 4:30pm').times().get(0)
+  t.equal(one.time, '4:30pm', 'get(0) is an object')
+  t.end()
+})
+
+test('eod is end-of-day', (t) => {
+  t.equal(getStart('due eod'), '2026-07-11T22:00:00.000-04:00', 'due eod')
+  t.end()
+})
+
+test('a range does not stop other dates from splitting', (t) => {
+  const res = nlp('it runs between june and july. see me june 5, june 10').dates(context).get()
+  t.equal(res.length, 3, 'three dates found')
+  t.end()
+})