A day is one Earth rotation — about 24 hours. Divided into 24 hours, 1440 minutes, 86,400 seconds.
Type a value, pick units
24
1 day = 24 hour
One day, broken down
- 1 day = 24 hours
- 1 day = 1,440 minutes
- 1 day = 86,400 seconds
- A day is one full rotation of Earth on its axis.
A 'day' can mean two things: the 24-hour day (solar day) or the daylight part only. Astronomers also use the *sidereal day* — Earth's spin relative to the stars — which is about 4 minutes shorter.
Your turn
How many seconds are in half a day?