Time

Compute Easter Sunday for any year using the standard Gregorian computus — or the Julian (Eastern Orthodox) variant.

Split a date range into N equal intervals — get the start/end of each chunk or just the boundary dates between them.

Pick a pattern (weekly, every Nth weekday of the month, on the same day of month, every N days) and see the next N actual dates.

Type a 5-field cron expression and see the next N times it will fire — local time, including weekday + day-of-month dual semantics.

Type any date (ISO, RFC, Unix epoch, locale) and see it rendered in 14+ standard formats side by side.

Convert a duration between human ("1h 30m"), clock (1:30:00), ISO 8601 (PT1H30M), and raw seconds/minutes/hours/days.

Run focused 25-minute work sessions and short / long breaks, with a circular timer, sound alerts, and a daily counter.

Add or subtract years, months, weeks, days, and business days from any date — or find the difference between two dates.

See several time zones side by side with live updates and offset differences from your local time.

Calculate the exact difference between two date-times, broken down into days, hours, minutes, and seconds.

Convert a date and time between any two world timezones, including DST.

Convert Unix timestamps to dates and dates back to timestamps.

A precise stopwatch with laps and a countdown timer with an alarm.

Count the business days between two dates — pick which weekdays count as weekend and paste a list of holidays to exclude.

Compute sunrise, sunset, solar noon, and all three twilight phases for any latitude, longitude, and date — using the NOAA solar algorithm.

Count the days between two dates, or the countdown to a target date.