Why is February the last month 28 days and Sometimes 29 days?
* Why is the last month of February sometimes 28 days and sometimes 29 days? * As you all know, February this year is 29 days. And it's been 4 years since, but why. And when is it happening? Most people may know the reason. But for those who don't know, find out what the real reason for an extra day or leap day is every 4 years. In fact, the duration of the Earth's orbit around the sun is not 365 days, but rather the fourth day, ie 365 days, five hours, 49 minutes and 12 seconds. And since the earth revolves around the sun. Therefore, climate change also depends on the relation of the rotation of the earth and the sun, so if you keep 365 days each year, the fourth day of each year starts to make a difference. And the calendar season starts to take off. Now that such a Gregory calendar is used around the world. It has 365 days, so by means of leap seconds and leap year, clocks and calendars are synchronized with earth and seasons. About 45 BC, King Julius Cae...