On average, this is 24 hours (86,400 seconds). As a day passes at a given location it experiences morning, afternoon, evening, and night. This daily cycle drives circadian rhythms in many …

The meaning of DAY is the time of light between one night and the next. How to use day in a sentence.

1. Of or relating to the day. 2. Working during the day: the day nurse. 3. Occurring before nightfall: a day hike.

Definition of day noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

DAY definition: 1. a period of 24 hours, especially from twelve o'clock one night to twelve o'clock the next night…. Learn more.

Day is the time when it is light, or the time when you are up and doing things. The weather did not help; hot by day, cold at night. 27 million working days are lost each year due to work …

DAY definition: the interval of light between two successive nights; the time between sunrise and sunset. See examples of day used in a sentence.

Jan 1, 2026 · The time taken for the Earth to make a full rotation about its axis with respect to the fixed stars; a sidereal day or stellar day. (informal or meteorology) A 24-hour period beginning …

It is day time on the side of the Earth that is facing the Sun. When it is night time, that side of the Earth is facing away from the Sun. It takes 24 hours for the Earth to spin once, so that is one …

5 days ago · A day is a 24-hour period, or the length of time it takes the Earth to rotate fully on its axis. There are 365 days in a year, and 31 days in the month of January.