How many hours are in a year?

Q&A
1

How many hours are in a year?

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2

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:-

  1. Draconic(eclipse) :- 346.62 days

  2. Lunar :- 354.37 days

  3. Vague, a common year in many calendars :- 365 days

  4. Tropical(Solar) :- 365.242189 days

  5. Gregorian :- 365.2425 days

  6. Julian :- 365.25 days

  7. Sidereal :- 365.25636 days

  8. Anomalistic :- 365.259636 days

  9. Leap year :- 366 days

Now let’s see the total number of hours of the main years below:-

  1. 1 common year (Vague) :- 365 days = (365 days) × (24 hours/day)
    = 8760 hours

  2. 1 leap year = 366 days = (366 days) / (24 hours/day)
    = 8784 hours

  3. 1 Julian year = (365.25 days) × (24 hours/day) = 8766 hours

  4. 1 Sidereal year = (365.25636 days) × (24 hours/day) = 8766.15264 hours

  5. 1 tropical year = (365.242189 days) × (24 hours/day) = 8765.812536 hours

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Time is a human construct. From planck time to supereons. They are relative units of measure. Likewise, hours and years are something humans created to keep track/record, predict and categorize based on Earth’s orbit and its revolution around the Sun. There is not a static number of hours in a year, for instance, if you consider leap years, they are 24 hours longer. So approximately 8784 hours in a leap year on Earth. If we lived on Mars, we would experience 16,500 hours in a year.

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4

Let’s start by assuming that you mean a year of exactly 365 days, where all of those days are exactly 24 hours long:

365×24=8760365×24=8760 This is probably the answer you were looking for.

But days are not of a standard length and neither are years.

A sidereal day (Earth’s full turn on her axis) is about 23.934¯¯¯23.934¯hours; with a sidereal year (a journey round the Sun) being closer to 365.242365.242 days:

365.242×23.934¯¯¯=8741.869365.242×23.934¯=8741.869 hours approximately.

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