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:
“Virtue and vice suppose the freedom to choose between good and evil; but what can be the morals of a woman who is not even in possession of herself, who has nothing of her own, and who all her life has been trained to extricate herself from the arbitrary by ruse, from constraint by using her charms?... As long as she is subject to man’s yoke or to prejudice, as long as she receives no professional education, as long as she is deprived of her civil rights, there can be no moral law for her!”
—Flora Tristan (1803–1844)
“Art and power will go on as they have done,—will make day out of night, time out of space, and space out of time.”
—Ralph Waldo Emerson (1803–1882)