CalendarHours

The Encyclopedia of Time!

On our portal you will find accurate information about all world time zones, daylight saving time, online calendars, time calculators, annual and monthly calendars to print, holiday dates in all countries of the world and opening hours of major US companies.

World Clock

What Time Is It?
Today's Date

Upcoming Holidays

In our World Holidays app, you will find the complete and official list of 2023 Public Holidays in all 193 member countries of the United Nations (UN).

Holiday Today
  • 15 May 2025
    Discovery Day

    Discovery Day Cayman Islands

    See More
  • 16 May 2025
    Martyrdom of Imam Sadeq

    Martyrdom of Imam Sadeq Iran

    See More
  • 17 May 2025
    17 May Constitution Day (1814)

    17 May Constitution Day (1814) Norway

    See More

The Best Free 2025 Calendars

In our amazing collection you will find free calendars for any year, including annual, monthly, weekly calendars and planners for personal and professional use.

2025 Calendar

Time Zones

UTC Time Zone
Time Zone Map

Time Calculator

  • Convert Military Time to Civilian Time Like A Boss!

    Use our free Military Time app to easily convert and track the exact time of all existing military time zones on planet earth.

  • Military Time Converter




Trending Holidays 2025

In our American Holidays app, you'll find the complete and official list of holidays in all U.S. states with confirmed dates each year, meanings and key facts.

US Holidays 2025

US Time Zones

US Time Zone Map
Time in America

Questions and Answers

  • How Many Days In A Month

    How Many Days In A Month?

    By Ask Lady Kronos

    Find out the total days and working days during each month in regular and leap years by learning the Knuckle technique.

  • How Many Weeks In A Year

    How Many Weeks In A Year?

    By Ask Lady Kronos

    Find out the exact number of weeks during regular years, leap years, school years, work weeks and pay weeks in all years.

  • How Many Days In A Year

    How Many Days In A Year?

    By Ask Lady Kronos

    Find out the exact number of days during regular years, leap years, annual work days, weekend, school days and trading days.

  • How Many Hours In A Year

    How Many Hours In A Year?

    By Ask Lady Kronos

    Find out the exact number of hours during regular years, leap years and learn how many hours there are in each month.

  • How Many Minutes In A Day

    How Many Minutes In A Day?

    By Ask Lady Kronos

    Find out the exact number of minutes in each hour and learn how to calculate how many minutes there are in each day.

  • How Many Days Left In The Year

    How Many Days Left In The Year?

    By Ask Lady Kronos

    Find out how many days left in the year according to your time zone and get ready for a happy graduation party.

Opening Hours

Always Be Inspired

"Don't let the fear of the time it will take to accomplish something stand in the way of your doing it. The time will pass anyway; we might just as well put that passing time to the best possible use." - Earl Nightingale

As See On



  • USA Today
  • El País
  • Forbes
  • BuzzFeed

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