- A day is measured by how long it takes the earth to rotate (turn) once: 24 hours.
- The earth is divided into 24 time zones. It takes the sun an hour to cross each zone.
- The time zones are marked by imaginary lines called meridians, which run north and south on the globe.
- The prime meridian is at Greenwich, England. It is 0° longitude. From here, east and west longitude is calculated for the rest of the globe.
- A new day begins at the international date line, which is halfway around the world from the prime meridian.
- East of the international date line it is 1 day earlier than west of it. Remember, “Go ahead west to the new day, go back east to the old.”
More on Days from Fact Monster:
- day - day day, period of time for the earth to rotate once on its axis. The ordinary day, or solar day, ...
- On This Day... , - Wednesday, December 22, 2010 This is 356th day of the year and 9 days remain in the year. Hebrew ...
- Benjamin Day - Day, Benjamin Day, Benjamin, 1838–1916, American printer; son of Benjamin Henry Day. While ...
- Dorothy Day - Dorothy Day social activist, journalist, and cofounder of the Catholic Worker movement Born: 1897 ...
- Thomas Day - Day, Thomas Day, Thomas, 1748–89, English social reformer and author. He supported the ...