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As 2025 gets started, planning for the year is in full swing. Here is a list of 2025 holidays, special events, big games, cultural milestones and other key dates to mark on your calendar ...
{{IsLeapYear|year}} year defaults to {{CURRENTYEAR}} (2025). It must be specified in the Gregorian calendar, extended to all epochs using linear year numbering: use the proleptic Gregorian calendar in Christian Era before the change, and the astronomical year convention (using negative numbers, and year 0) in all years BC before the Christian era (there's a difference of 1 in absolute value).
A leap year (also known as an intercalary year or bissextile year) is a calendar year that contains an additional day (or, in the case of a lunisolar calendar, a month) compared to a common year. The 366th day (or 13th month) is added to keep the calendar year synchronised with the astronomical year or seasonal year . [ 1 ]
A table for the Gregorian calendar expresses its 400-year grand cycle: 303 common years and 97 leap years total to 146,097 days, or exactly 20,871 weeks. This cycle breaks down into one 100-year period with 25 leap years, making 36,525 days, or one day less than 5,218 full weeks; and three 100-year periods with 24 leap years each, making 36,524 ...
On a non-Leap Year, some leapers choose to celebrate the big day on Feb. 28. Some choose to celebrate on March 1. Some even choose both days or claim the whole month of February to celebrate.
Using AOL Calendar lets you keep track of your schedule with just a few clicks of a mouse. While accessing your calendar online gives you instant access to appointments and events, sometimes a physical copy of your calendar is needed. To print your calendar, just use the print functionality built into your browser.
Leap years have two letters, so for January and February calculate the day of the week for January 1 and for March to December calculate the day of the week for October 1. Leap years are all years that divide exactly by four, with the following exceptions: Gregorian calendar – all years divisible by 100, except those that divide exactly by 400.
Leap day exists to even out time discrepancies between the calendar year and the solar year. While it's widely accepted that a calendar year has 365 days, it takes Earth about 365.242 days to ...
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