The Year 2000 is a leap year!
The Earth is turning around the Sun in 365.2425 days, which correspond to 365 days 5 hours, 49 minutes and 12 seconds.
There are three rules to determine if a year is a leap year, the rule of 4 years, the rule of 100 years and the rules of 400 years.
The time which exceed the 365 days every four years produce another day, the 29th February, and this is a leap year.
In one year we cumulate 10 minutes and 48 seconds (648 seconds) delay, 2592 seconds (648 * 4) every 4 years and 64800 seconds (648 * 100) every 100 years.
Therefore every 100 years we deduct one day (there is no the 29th February and the year is not a leap year), but we cumulate a delay of 21600 seconds (86400 - 64800).
Every 400 years we add again one day to recuperate the delay (21600 * 4 = 86400) and this is again a leap year.
That's why years 1700, 1800 and 1900 they were not leap years while 1600 it was!
Year 2000 is really a leap year and the 29th February 2000 it definetly exist!.
The Third Millennium Countdown
Time left:
The Year 2000
