How many hours makes a year?

Answer 1

~8766 mean solar hours or

8760 hours based on calendar hours.

Notes:

1. "~" = "approximately".

2. Earth's orbital time around the sun = 365.256363 mean solar days per year.

3. Earth's axial rotation time = 86400.002 mean solar seconds per day

4. 86400.002 / 3600 * 365.256363 = ~8766.2 hours

5. Alternatively, if you assume 24 hours/day & 365 days per year, the answer would be: 24 * 365 = 8760 hours in a non-leap year that is based on calendar days--not mean solar factors.

Answer 1:

8270