# How many hours are in a year?

**URL:** <https://howtodiscuss.com/t/how-many-hours-are-in-a-year/55>\
**Category:** Q&A\
**Created:** [April 29, 2020, 6:53am UTC](https://howtodiscuss.com/t/how-many-hours-are-in-a-year/55 "2020-04-29T06:53:17Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Nguyen](https://howtodiscuss.com/user_avatar/howtodiscuss.com/nguyen/32/32_2.png) [@Nguyen](https://howtodiscuss.com/u/Nguyen)\
**Post date:** [April 29, 2020, 6:53am UTC](https://howtodiscuss.com/t/how-many-hours-are-in-a-year/55/1 "2020-04-29T06:53:17Z")

</div>

**How many hours are in a year?**

---

<div class="post-metadata">

**Author:** ![Dawn](https://howtodiscuss.com/user_avatar/howtodiscuss.com/dawn/32/27_2.png) [@Dawn](https://howtodiscuss.com/u/Dawn)\
**Post date:** [April 29, 2020, 7:20am UTC](https://howtodiscuss.com/t/how-many-hours-are-in-a-year/55/2 "2020-04-29T07:20:27Z")

</div>

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

---

<div class="post-metadata">

**Author:** ![Luke](https://howtodiscuss.com/user_avatar/howtodiscuss.com/luke/32/30_2.png) [@Luke](https://howtodiscuss.com/u/Luke)\
**Post date:** [April 29, 2020, 8:09am UTC](https://howtodiscuss.com/t/how-many-hours-are-in-a-year/55/3 "2020-04-29T08:09:10Z")

</div>

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.

---

<div class="post-metadata">

**Author:** ![Kristin](https://howtodiscuss.com/user_avatar/howtodiscuss.com/kristin/32/31_2.png) [@Kristin](https://howtodiscuss.com/u/Kristin)\
**Post date:** [April 29, 2020, 8:34am UTC](https://howtodiscuss.com/t/how-many-hours-are-in-a-year/55/4 "2020-04-29T08:34:11Z")

</div>

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.