Each day starts at 12:00 a.m.
Because there are twenty-four hours in a day and it stops at midnight. Probably because dawn is at a different time each day and days would not be equal in time
The amount of time a person needs to run each day depends on the person and their exercise needs. Many people start off slow and run only a mile each day until their body can handle more.
12:00am
D-day was June 6th 1944 and the time when the first troops hit the beach was around 6 in the morning.
Serial weight measurements are taken at the same time each day. The exact time of day is irrevelant as long as the weight is measured consistantly, at the same time each day.
12pm
At midnight.
It grew over a period of time.
Muslims fast through the day time period from Dawn (just before start of sunrise) until start of sunset.
On the first day of each school term.
5pm.
Day starts at 12:00 A.M.