Q. Why does the month of February have 29 days, after every four years? Explain
Answers
By the 16th century, scholars had noticed that time was still slipping—Caesar's calculation that a year lasted 365.25 days was close, but still overestimated the solar year by 11 minutes. This was a problem for the Catholic Church, as the date of Easter had drifted away from its traditional place, the first Sunday after the first full moon following the vernal equinox, by roughly ten days. Pope Gregory XIII commissioned a modified calendar, one which kept Leap Day but accounted for the inaccuracy by eliminating it on centurial years not divisible by 400 (1700, 1800, and 1900 were not leap years, but 2000 was). The introduction of the Gregorian Calendar marked the last change to the Western calendar as we know it today.
Experts note that the Gregorian calculation of a solar year—365.2425 days—is still not perfect, and thus another correction will be necessary. Thankfully, the Gregorian calendar is only off by about one day every 3,030 years, so mankind has some time before this becomes a problem.
Explanation:
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