Reply to thread

Message: <blockquote data-quote="imhotep" data-source="post: 27333422" data-attributes="member: 562115">Earth takes approximately 365.242189 days, or 365 days, 5 hours, 48 minutes, and 45 seconds, to circle once around the Sun. The modern Gregorian calendar has only 365 days in a year. If we didn't add a leap day on February 29 almost every four years, each calendar year would begin about 6 hours before the Earth completes its revolution around the Sun.So a Leap Day makes the correction.A year is a leap year when evenly divisible by 4; But If the year can also be evenly divided by 100, it is not a leap year; UNLESS the year is also evenly divisible by 400. Then it is a leap year.Note: There is a Leap Second too. We add leap seconds from time to time to ensure our clocks reflect the Earth's rotation speed as accurately as possible. The speed at which our planet rotates around its axis fluctuates daily, and it slows down very slightly over time.The International Earth Rotation and Reference Systems Service (IERS) announces whenever this takes place.</blockquote>

Top Bottom