For Single Day
To retrieve sunrise and sunset times, please spell out city or town name prefixes, as in "East Orange," "Fort Lauderdale," etc. The only exception is "St." where an abbreviation can be used like "St. Louis." If you would like this information for an entire year, please visit the newly redone U.S. Astronomical Applications Department Web site.
The United States Naval Observatory (UNSO) is the official timekeeping source for the U.S. Department of Defense. It also determines standard times for the entire United States of America. The USNO defines sunset and sunrise, for the sake of its measurements, as the moment when the upper edge of the Sun's disk touches the horizon (this assumes average conditions in the atmosphere and a level region where the sun sets).
Moonrises and moonsets are based the same as a sunrise or sunset, except that the times that they can occur can happen anytime during a twenty-four hour period.
At creation the Eternal established the purpose of the great heavenly bodies known as the sun and the moon.
14. And God said, "Let there be lights in the firmament of the heavens to divide between the day and the night, and let them be for signs, and for appointed seasons (festival or holy days), and for days and years; 15. And let them be for lights in the firmament of the heavens to give light upon the earth." And it was so. (Genesis 1:14 - 15, HBFV)
During what is called 'creation week' God established a pattern of how he intended days to be reckoned. The phrase "the evening and the morning of," denoting a single day, appears six times in Genesis 1 or once for each of the first six days of the week (Genesis 1:5, 8, 13, 19, 23, 31).
A true Biblical day, therefore, and one that makes sense even today, occurs from one sunset to another. This natural way to determine when a day ends and another begins can be seen and understood by just about every human being. Contrast this to our 'modern' method of using midnight to determine the end of one day and the start of another. Midnight does not have an astronomical equivalent and is strictly an invention of man. Without a clock or other instrument in which to tell time, we would never know when a day ends and a new one begins!
Determining sunrise and sunset is important for determining the beginning and ending of God's weekly Sabbath. The weekly Sabbath begins when the sun has set on Friday and continues to when it sets on Saturday. The rising and setting of the sun is also critical for determining the start and end of God's seven annual Feast days. In fact, the exact time to keep the Day of Atonement, one of God's Holy days of worship, was so important to him that he left no doubt when it was to be kept (see Leviticus 23:26 - 32, Numbers 29:7 - 11).