If There Are 365 Days In A Year. Why Is It If You Multiply 52 Weeks X 7 Days Your Total Is 364?


3 Answers

Anonymous Profile
Anonymous answered
Your math is correct.  There are not exactly 52 weeks per year, it is only an approximation.  All the calendar systems, including our Gregorian calendar, have had to adjust out some inaccuracies of fitting our traditional use of a week to the solar cycle, and some are better than others.

According to Wikipedia, "In a Gregorian mean year there are exactly 365.2425 days, and thus exactly 52.1775 weeks"   The Julian calendar that was previously used had "365.25 days or 52528 weeks."    And once you understand there is no modulo relationship of a week to a year, then it makes sense why our months (and years) end up starting on a different days of the week.

In both systems, there are about ~0.25 days extra per year, which accounts for the extra day in February during a leap year.  

Even after observing leap years, there are also leap seconds they occasionally have to adjust out because of the Earth's orbital decay and tidal forces.   See en.wikipedia.org

david allen Profile
david allen answered
Because there is actually 51 weeks with seven days in it if you add the remaining days in the first week of the year and the remaining days in the last week in the year it always adds up to eight except in the leap year
Larry Patterson Profile
Larry Patterson answered
The 365 is based on the time it takes for a rotation of the earth.
In other words, the 365 (366 in leap year), is a scientific fact.
Weeks are an arbitrary division of the days of a year, that man chose and with no basis in fact.

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