Dates & Times
Keywords
Section titled “Keywords”Use built-in keywords to refer to common dates and times.
today | 04/22/2026yesterday | 04/21/2026tomorrow | 04/23/2026now | 12:00today, yesterday, and tomorrow resolve to a date. now resolves to the
current time of day (displayed as HH:mm).
Date Formats
Section titled “Date Formats”Notes Calculator accepts several date input formats.
ISO format (YYYY-MM-DD):
2026-12-25 | 12/25/2026Slash format — US (MM/DD/YYYY) or EU (DD/MM/YYYY, enabled in Settings):
04/22/2026 | 04/22/2026Long-form — month name, day, and optional year:
April 22 2026 | 04/22/2026Apr 22 | 04/22/202622 April 2026 | 04/22/2026Named Weekdays
Section titled “Named Weekdays”Reference specific weekdays relative to today.
next Monday | 04/27/2026last Friday | 04/17/2026Monday in 3 weeks | 05/18/2026Date Arithmetic
Section titled “Date Arithmetic”Add or subtract days from a date. A bare number is treated as days.
today + 7 | 04/29/2026today + 3 days | 04/25/2026today + 2 weeks | 05/06/2026today - 1 | 04/21/2026Subtract two dates to get a duration:
2026-12-25 - today | 247 daysnext Monday - today | 5 daysAdd a time amount to a date:
today + 3 hours | 04/22/2026now + 90 minutes | 13:30Timezones
Section titled “Timezones”Append in <zone> to interpret a date or time in a specific timezone.
now in Tokyo | 21:00today in UTC | 04/22/20262026-04-22 in America/New_York | 04/22/2026Supported formats:
- City names, single or multi-word:
Tokyo,London,Los Angeles,New York,Hong Kong,Buenos Aires,Ho Chi Minh City,Kuala Lumpur, and ~80 more. - Full IANA names:
Asia/Tokyo,Europe/London,America/New_York. - US abbreviations:
EST,EDT,CST,CDT,MST,MDT,PST,PDT,AKST,AKDT,HST. - Named US zones:
eastern time,pacific time,central time,mountain time,atlantic time,hawaiian time. - Airport codes:
LAX,JFK,LHR,CDG,NRT,SYD,HKG, and ~60 more. - GMT/UTC offsets:
GMT,UTC,GMT+8,UTC-05:30.
When a zone’s calendar day differs from your local day (e.g. late evening in Vienna → next morning in Tokyo), the result includes the date so the day shift is visible:
now in Tokyo | 04/24/2026 00:25Query the current time in any zone:
time in Tokyo | 21:00Tokyo time | 21:00date in Vancouver | 04/22/2026Time difference between zones:
time difference between Tokyo and New York | 13 hoursdifference between GMT+8 and EST | 13 hoursDuration Formatting
Section titled “Duration Formatting”A duration result is displayed in human-readable form.
2026-12-25 - today | 247 daystomorrow - now | 11 hours 59 minutesHover over any duration result to see the raw value in seconds.
ISO 8601 & Unix Timestamps
Section titled “ISO 8601 & Unix Timestamps”ISO 8601 datetime (with required timezone):
2026-04-22T10:15:00Z | 04/22/20262026-04-22T10:15:00+01:00 | 04/22/2026Convert between dates and Unix timestamps:
today to timestamp | 17452800001745280000 to date | 04/22/2025current timestamp | 1776859200Millisecond timestamps (≥ 10^11) are auto-detected:
1745280000000 to date | 04/22/2025Format a date as ISO 8601:
today as iso | 2026-04-22T00:00:00.000Z2026-04-22T10:15:00Z as iso8601 | 2026-04-22T10:15:00.000Z