The meaning of DAY is the time of light between one night and the next. How to use day in a sentence. See today's exact date and time updated live in every format — ISO 8601, Unix timestamp, Julian date, day of year, week number, moon phase, and more. The simple definition of DAY is a period of 24 hours beginning at midnight : one of the seven time periods that make up a week. TikTok - trends start here. On a device or on the web, viewers can watch and discover millions of personalized short videos. Download the app to get started. 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. June 9 is the 160th day of the year. More than 15 holidays and observances fall on the date. Filipino-Chinese Friendship Day celebrates the historical and cultural ties between the Filipino and Chinese communities in the Philippines. The Day is southeastern Connecticut’s trusted news source, covering New London and the region with breaking news, sports, business, entertainment, and video since 1881. Find out today's date, current time, day of the week, week number, and more. Your complete date and time resource. Details about today's date with count of days, weeks, and months, Sun and Moon cycles, Zodiac signs and holidays. 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.