How many days are there in a normal year? The answer’s 365 – or is it? That is the number that we conveniently use even though it is not strictly accurate. It really takes the earth 365¼ days to go round the sun. So every fourth year an extra day is added to February to make up the difference. This keeps our calendar in time with the astronomical calendar – the one the earth and sun work by.
Why a leap year? Assume a given date in a month falls on Monday the first year. The next year it will be Tuesday. The year after, it will be Wednesday. When it comes to the fourth year, it is time to add the extra day. So the date leaps over Thursday to Friday.
Picture Credit : Google
