How long is a solar day?

Very close to 24 hours, or 86400 seconds.

The length of its solar day is 24h 39m 35.244s (also known as a sol, more precisely 88,775.24409 seconds).

Actually, it depends on the season. In summer, we get more sun because our half of the Earth is pointed towards the sun. Thus, we have more area of sun to escape. In winter, our top half of the Earth...

. There are at least 3 meanings of the word "day". 1.) If by "day" you mean the rotation period of the Earth with respect to the sun, then the Earth's day has increased in length over time. The...