Generally a number that strikes in our mind for number of days in a year is obviously 365, but when it comes to “ calculate total hours in a year” you must know these different types of years which varies in very few fractions but can change the result of hours in a year.
Let’s just have a glance at the type of years and the accurate number of days to calculate hours in whole year:-
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Draconic(eclipse) :- 346.62 days
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Lunar :- 354.37 days
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Vague, a common year in many calendars :- 365 days
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Tropical(Solar) :- 365.242189 days
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Gregorian :- 365.2425 days
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Julian :- 365.25 days
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Sidereal :- 365.25636 days
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Anomalistic :- 365.259636 days
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Leap year :- 366 days
Now let’s see the total number of hours of the main years below:-
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1 common year (Vague) :- 365 days = (365 days) × (24 hours/day)
= 8760 hours -
1 leap year = 366 days = (366 days) / (24 hours/day)
= 8784 hours -
1 Julian year = (365.25 days) × (24 hours/day) = 8766 hours
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1 Sidereal year = (365.25636 days) × (24 hours/day) = 8766.15264 hours
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1 tropical year = (365.242189 days) × (24 hours/day) = 8765.812536 hours