One day nearly everybody thinks about how long there are in a year. The appropriate response is by all accounts clear since it is rudimentary arithmetic. You can check them by isolating 365 days out of every year by seven days of the week. Along these lines we'll get 52 weeks in addition to one day. In the event that it is one of the jump years1 with 366 days, it has 52 weeks in addition to two additional days. As it were, one can say that a standard year contains 52 1/7 weeks and a jump year comprises of 52 2/7 weeks.
From the perspective of science, there are 52 1/7 (or 2/7) weeks in a year. It implies 52 entire weeks. However, on the schedule there will be 53 or 54 separate weeks however a couple of them will be inadequate. So the response to the inquiry regarding the quantity of weeks in a year relies upon what you want to call seven days.
How Many Days in a Year?
Calendar common year has 365 days:
1 common year = 365 days
One calendar leap year has 366 days:
1 leap year = 366 days
Leap year occures every 4 years, except for years that are divisable by 100 and not divisable by 400.
So the mean length of the Gregorian calendar year is:
1 mean year = (365+1/4-1/100+1/400) days = 365.2425 days
Julian year
Julian year is used for astronomical calculations (light year definition).
One Julian year has 365.25 days:
1 year = 365.25 days
Sidereal year
One sidereal year is the time it takes the Earth to do a single rotation around the sun.
One sidereal year has 365.25636 days:
1 year = 365.25636 days
Tropical year
One tropical year is the time it takes the Earth to complete a single cycle of the 4 seasons.
One tropiical year has 365.242189 days:
1 year = 365.242189 days