It takes 365 days for the earth to fully revolve around the sun.
Thats a full 360° rotation, shouldn't it be 360 days not 350? Am I retarded?

I'm not sure where the 350 comes from so I am assuming it is a typo.

A day is a totally separate measurement from a year. A day is the time the earth takes to rotate once on its axis, a year is the time it takes the Earth to orbit the Sun once. As these are two totally independent movements, there is no reason why it should take a convenient number of days to orbit the sun. In fact a tropical year is actually 365.24219 days. This is why we have to have the complicated system of Leap years* so that the calender corresponds to the actual length of the year.

The Moon doesn't play ball either, a synodic month (period from full moon to full moon) is 29.53059 days.

In fact the premise of your question is the wrong way around. We can do nothing about the rotation of the Earth or the orbital velocity and so we are stuck with the length of day and year as it is. The real question is why are their not 365° in a circle... although I'm glad that isn't the case. A right angle of 91.25° would be horrible to work with.


*Most people know that a leap year occurs every 4 years but the rule is actually a bit more complicated than that. If the year is exactly divisible by 4 then it is a leap year, UNLESS the year is exactly divisible by 100 in which case it isn't a leap year EXCEPT if it is exactly divisible by 400 in which case it is a leap year. Hence 1900 wasn't a leap year and 2100 won't be either however 2000 was.

OK, lets start from the beginning. For some reason people, when they started measuring time divided up the day in 12 hours and the night in 12 hours. Why? your guess is as good as mine.

When it came to give the circle a measurement they oriented themselves on the circle the sun described and for some - also unknown reason - decided to divide it in a function of 12. There they came up with 360 (30 * 12 = 360)

These are arbitrary numbers, they could have chosen 397645 or 2.4567356 and it still would make sense.

That has absolutely nothing to do with real physical phenomena, we just fit them into our arbitrary set of measurements.

Their math is flawed than, they should change a full circle to 365°.

It has been tried, the circle has been changed to all kinds of divisions. The problem is that there are other implications, like triangulation, navigation, geography. Besides it would not be 365 but 365.2425, which is the real amount of days in a year. (lots of fun calculating with that).

Workiing at a pizzeriia in high school, a customer once asked how many slices was in a small pizza....wise acre that I am, I said, "Six, but if you;re extra hungry we can cut it into 8"....she said "Ok, you better do that...."

Ahem....is there a metric circle of 100 degrees??

No, but one seldomly used of 400 degrees ....

I'd like everyone to keep in mind that insults, even if jokingly intended, are not something that should be posted... I have deleted a couple of comments, and hope no more shall arise.

Problem solved Yoda.