its called EQUINOX.
Depends on what time of year it is
24 hours a day
One day is 24 hours, half of that is 12 hours.
12 hours*21 days=252 hours
12 hours of daylight. 12 hours of darkness.
If you mean day by day 24.
24 hours
That depends on where exactly you are, and on the season.
No. The hours of darkness and day light are equal during autumnal equinox. (Both 12 hours)
in the area where trees are not there
Mars has a similar day length to Earth, with approximately 24 hours and 37 minutes in a Martian day. Of this, around 12 hours and 12 minutes are daylight hours and the remaining time is darkness.
That depends where in the world you are. -You didn't tell us that.
Equinox
On average, there are 12 hours of darkness in a 24-hour day. This is because the Earth rotates on its axis, causing half of the planet to be in darkness while the other half is in daylight. The length of darkness can vary depending on the time of year and the location on Earth.
maybe 6 hours
its called EQUINOX.