Civil Day
For civil purposes a common clock time has been defined for an entire region based on the mean local solar time at some central meridian. Such time zones began to be adopted about the middle of the 19th century when railroads with regular schedules came into use, with most major countries having adopted them by 1929. For the whole world, 40 such time zones are now in use. The main one is "world time" or Coordinated Universal Time (UTC).
The present common convention has the civil day starting at midnight, which is near the time of the lower culmination of the mean Sun on the central meridian of the time zone. A day is commonly divided into 24 hours of 60 minutes of 60 seconds each.
Read more about this topic: Day
Famous quotes containing the words civil and/or day:
“Resolved, There can never be a true peace in this Republic until the civil and political rights of all citizens of African descent and all women are practically established. Resolved, that the women of the Revolution were not wanting in heroism and self-sacrifice, and we, their daughters, are ready, in this War, to pledge our time, our means, our talents, and our lives, if need be, to secure the final and complete consecration of America to freedom.”
—Woman’s Loyal League (founded May 1861)
“Even to this day it is easier than it ought to be for me to get a rise out of an American by telling him something about himself which is equally true about every human being on the face of the globe. He at once resents this as a disparagement and an assertion on my part that people in other parts of the globe are not like that, and are loftily superior to such weaknesses.”
—George Bernard Shaw (1856–1950)