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Calendar and time calculator

Time zones, dates, countdowns and calculators. Exact results, nothing extra.

Popular:Age calculatorCountdownWorking daysWorld clock
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Syncing with internet time…
Free to useNo accountWorks on mobile
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Popular tools

What Time Is It?World ClockDays Until ChristmasAge CalculatorWeek Number

Everything about time, in one place

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  1. 01

    The time anywhere

    See the exact time in cities around the world, and the difference from where you are.

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  2. 02

    Dates, weeks and years

    Week numbers, day of the year, working days and age, calculated in a click.

    Week Number →
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US Calendar

Full-year American calendar with all dates, weekdays and US federal holidays.

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Days until…

How long until Christmas, Halloween, Easter and other dates? Tap to see the full list.

days16HalloweenSat, October 31days42ThanksgivingThu, November 26days43Black FridayFri, November 27days71ChristmasFri, December 25See all 8 →Easter, New Year and more

Guides

Explanations about time, dates and the calendar: how Easter is calculated, week numbers, leap years, daylight saving time, time zones and more.

How Is the Date of Easter Calculated?Why Easter moves every year: the rule, the history behind it, the earliest and latest dates, and a worked example of the computation.What Is an ISO Week Number? How Week Numbers WorkHow ISO 8601 week numbers are defined, why some years have 53 weeks, and how to find the week number for any date.Leap Years Explained: Why February Sometimes Has 29 DaysWhy we have leap years, the exact rule for which years count, and what it means for people born on February 29.The History of Daylight Saving TimeWho invented daylight saving time, when countries introduced it, why it was abolished in some places and what the debate looks like now.

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