The earth revolves around the sun's orbit which takes 365.25 days due to 1 around each calendar year is 365 days, which means that there is 1 / 4 of days each year, which every year four years there will be special events. There is a 366 days. The February will be 29 days instead of 28 day as usual.The world is about, 4 700 years. The world does not have a round shape completely. The circumference at the equator, long 40 077 kilometers (24 903 miles), and around the world, the stages 40 009 kilometers (24, the 861 miles)
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