Time & calendar tools.

Set a countdown timer in one click or type any duration, run several at once, and get a sound and a browser notification when time is up.

Time anything to the hundredth of a second with laps, fastest and slowest lap marked, keyboard shortcuts, and a CSV export.

Set alarms for a time of day, once or every day, with a label, snooze, and a sound and notification while the page is open.

Work in 25-minute focus sessions with short and long breaks, adjustable lengths, a count of today's sessions, and an alert at every switch.

Time HIIT, Tabata, and EMOM workouts: set work, rest, and rounds, and hear a cue at every change, with an optional voice.

Boil eggs runny, jammy, firm, or hard, by size and starting temperature, with an alarm when they are ready.

A countdown shown as a shrinking red disc, for classrooms, children, and anyone who sees time better than reads it.

A full-screen 24-second basketball shot clock with a 14-second reset, tenths under five seconds, and a horn.

A split timer for speedruns in the browser, with segments, personal best comparison, best segments, and keyboard controls.

Make a printable calendar for a whole year or one month, on A4 or US Letter, with Monday or Sunday first and optional week numbers, as a PDF or PNG.

See today's week number at a glance, with the dates of this week, the US week number, the week of any date, and a table of every week of the year.

Count down the days, hours, minutes, and seconds to any date, or to New Year, Easter, Halloween, Thanksgiving, or Christmas, and share the countdown as a link.

See when the clocks next change in any place, whether they go forward or back, and at what time, from the browser's time zone data.

Convert dates between Gregorian, Chinese lunar, Islamic, Hebrew, Persian, Japanese, and other calendars.

Western years to Reiwa, Heisei, Shōwa, Taishō, and Meiji era years and back, with exact dates.

Look up a date's rokuyo and Japanese old-calendar date, browse a month and print it in JST.

Your Chinese zodiac animal and element from your date of birth, counted from Chinese New Year.

Easter, Ramadan, the Eids, Passover, Hanukkah, Chinese New Year, and more, for any year.

Convert Taiwan's Minguo years and dates to Western ones and back.

Convert between the Chinese lunar and Gregorian calendars, 1900–2100.

The dates and times of the 24 solar terms and the traditional Chinese festivals for any year.

Calculate the four stem-branch pillars with exact solar-term boundaries, a choice of day boundary and optional true solar time.

Build a nine-palace Flying Star chart from a period and facing mountain, with base, mountain and facing stars.

Look up all 64 hexagrams, build their six lines and inspect upper, lower, nuclear, opposite and inverse structures.

Your traditional Japanese age, kazoedoshi, for this year, and your yakudoshi unlucky years with mae-yaku and ato-yaku.

Your Javanese weton, the weekday and pasaran of a date, with its neptu, the next time it comes round, and a partner's weton.

Find your star sign from your birthday, with the dates of all twelve Western zodiac signs and a note for birthdays on the cusp.

Count your days under the Schengen 90/180-day rule, see how long you can stay, and when you can come back.

Compare both traditional Kua formulas, using the Li Chun solar-year boundary and a complete Eight Mansions direction table.

Convert a time between cities and time zones, daylight saving included, and find the hours that fall within working time everywhere for a meeting.

Follow live city clocks, compare offsets and find shared working hours with a shareable meeting strip and optional local storage.

A day-by-day sleep and light plan for crossing time zones, before and after the flight.

Sunrise, sunset, solar noon, day length, twilight, golden hour, and blue hour for any city or your location, on any date.

Tonight's moon phase and illumination, moonrise and moonset for your city, and the next full moon.

See when this year's meteor showers peak, how bright the Moon will be, and the best hour to watch from where you are.

See which planets are up tonight from where you are, where to look, how bright they are, and when they rise and set.

Fajr, Dhuhr, Asr, Maghrib, and Isha for your city by your country's method, with Imsak, the next prayer, and Qibla.

A printable Ramadan timetable for your city: Imsak, Fajr, Maghrib for iftar, and the other prayers each day.

Zakat on wealth or income at 2.5%, with the nisab from today's gold or silver price.

Zakat fitrah for your household: 2.5 kg of rice a person, or your local agency's amount in money.

Indonesia's religious holiday allowance: one month's wages after 12 months, or a share per month, by Permenaker 6/2016.

Add and subtract hours, minutes, and seconds, with totals in hours, minutes, and seconds.

12-hour to 24-hour and military time and back, with a full conversion chart.

A big full-screen digital clock with seconds, the date, 12- or 24-hour time, and three colour schemes.

A full-screen clock that spells out the day of the week and morning, afternoon, evening, or night, for people with dementia.

Count forward from today or another date, with weekdays, ISO week numbers and a calendar download.

See the date 30 days from today, its weekday, the weekdays in between and ISO week number.

See the date 45 days from today, its weekday, the weekdays in between and ISO week number.

See the date 60 days from today, its weekday, the weekdays in between and ISO week number.

See the date 90 days from today, its weekday, the weekdays in between and ISO week number.

See the date 100 days from today, its weekday, the weekdays in between and ISO week number.

See the date 120 days from today, its weekday, the weekdays in between and ISO week number.

See the date 180 days from today, its weekday, the weekdays in between and ISO week number.

See the date 365 days from today, its weekday, the weekdays in between and ISO week number.

Count back from today or another date, with weekdays, ISO week numbers and a calendar download.

See the date 30 days ago, its weekday, the weekdays in between and ISO week number.

See the date 60 days ago, its weekday, the weekdays in between and ISO week number.

See the date 90 days ago, its weekday, the weekdays in between and ISO week number.

See a live countdown to Christmas Day, 25 December, in your local time zone.

Count down to 1 January in your local time zone, with live days, hours and minutes.

Find the days until your next birthday, the age you will turn and the weekdays of your next five birthdays.