Day - Wikipedia 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 organisms, which are vital to many life processes
What day of the year is it today? - Date Calculator Day of the year tells you the number of the current day How many days have passed this year in days number and display the day of the year date with day name
DAY definition and meaning | Collins English Dictionary 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 accidents and sickness He arranged for me to go down to London one day a week