Date Math

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Base URLhttps://date-math.datemath.workers.dev/v1

• POST/add$0.001Date Math: Add or subtract years/months/weeks/days/business days/hours/minutes/seconds. Month-end clamping; business days skip weekends, given holidays, and the public holidays of an optional country.
• POST/diff$0.001Date Math: Difference between two dates or datetimes: calendar (Y/M/D), total days/weeks/hours, and business days (weekdays in [from, to) minus holidays; pass country to exclude its public holidays).
• POST/info$0.001Date Math: Calendar facts for a date: weekday, ISO week, quarter, day of year, leap year, weekend.
• POST/pay_dates$0.001Date Math: Upcoming pay or billing dates for monthly, semi-monthly (e.g. 15th and last day), biweekly or weekly schedules, moved off weekends and public holidays (to the previous, next or nearest business day). Use for payroll calendars, invoice due dates and recurring billing.
• POST/city$0.001Date Math: Find the IANA time zone and current local time for up to 10 cities by name ("Cebu", "São Paulo", "Springfield" + country). 7,000+ cities.
• POST/cron$0.001Date Math: Explain a cron expression in plain English and list its next run times in any time zone.
• POST/overlap$0.001Date Math: Find when working hours overlap across time zones (meeting windows). Per-participant hours optional; skips weekends by default; up to 14 days.
• POST/recurrence$0.001Date Math: Expand an iCalendar RRULE ("every 2nd Tuesday", "Mon/Wed until June") into concrete dates and times in a time zone, DST-aware, with optional excluded dates.
• POST/business_day$0.001Date Math: Is a date a business day? If not, why (weekend, or which public holiday). Also the next and previous business day, and the month's business-day count, first and last business day. Use for office-open checks, shipping cut-offs, settlement dates. Country holidays, custom holidays and custom workweeks (e.g. Sun–Thu, Mon–Sat).
• POST/parse$0.001Date Math: Resolve natural-language dates like "next Friday at 3pm", "in 2 weeks" or "Dec 25 to Jan 2" to exact datetimes, relative to a reference time and time zone.
• POST/business_hours$0.001Date Math: SLA math in working hours: the deadline N business hours after a start time, or business time elapsed between two times. Custom hours and workdays, holidays, country public holidays, DST-aware.
• POST/holidays$0.001Date Math: Public holidays for a country and year: 207 countries, 2000–2050. Lunar or government-proclaimed dates are rule-based estimates.
• POST/convert$0.001Date Math: Convert an instant or local wall-clock time between IANA time zones (DST-aware).

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Showing 13 of 13 listed endpoints.