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Definitions and Terms US & Canadian Holidays
Days Between Dates

Calendar Comparisons

Calendars by Weekdays

Day of the Year

This Day In History

Day of the Year - Leap Year

Table of Seasons

Zodiac Calendar



Time Units

Calendar Comparisons

Julian vs Gregorian

Millenniums & Centuries



1990-1995

1995-2000

2000-2005

2005-2010

2010-2015

2015-2020

Holiday Determination

Holidays Trivia Quiz







How The Leap Year Throws Off The Calendar



If it wasn't for the leap year - calendar dates would be much simpler to understand. However, it wouldn't allow useful websites such as VPCalendar.net to help explain all of the madness :)

If the calendar was a simple 365 days, our lives would be more basic. We wouldn't have people that only have birthdays once every 4 years, and calendar makers could have a set amount of dates to print in each years calendar. However, that of course is not the case, as the leap year gives us 365.25 days in a calendar year.

Historical calendars are even more difficult to analyze as different areas of the world adopted the current calendar format at different times. Most countries today use the Gregorian format as opposed to the Julian format. And while we are taught that the leap year being once every four years means that each year is really .25 days longer; the Gregorian calendar accounts for the fact that a year is 11 minutes less than 365.25 days.

Either way, the leap year continues to fascinate us and its not going anywhere. And anyone who says we are open 24/7, 365 days a year, isn't really always open because the leap year throws the calendar out of whack!

For more info, review when the next leap year is along with past and future years which will be a leap year.









19th Century

20th Century

21st Century

Leap Years




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