What is the annual total of nighttime hours for Washington D.C.?
916358
Not sure about annual total, but today the sun rose there at 6:57 AM and set at 4:50 PM... An annual total would average out to 12 hours of each, I would imagine
300017
they come out at night, mostly
1061900
sin,cos waveform in a.c.\nstraight line in d.c.
1088268
minimum 6 hours   maximum 8 hours
378839
5:00 m-t\n\n6:00 on fridays\n\n\n*no really, I don't know because you don't give a city or state.*
822079
depends on the city that it is in. some stay open 24/7. but if its a smaller town then they open around 6-7am and close at 11 or midnight.
263596
There are 24 hours to a dygn (day + night) but the english language doesn´t have a single word for (day + night) for some reason which is why you are confused. How many hours to the day varies throughout the year and with the location. In the northern hemisphere the day is now longer than the night. In the summer the night will only last for a couple of hours up here (Sweden) with the day lasting for some 20 hours. The day + the night is always 24 hours however.
932677
That depends on what side you are on. One side is always daytime the other side is always nighttime.
162120
Between 10 pm and 12 am
672110
Washington D.C. in the District of Columbia.
301672
Washington, D.C. is the capital city of the United States of America. "D.C." stands for the "District of Columbia", the federal district containing the city of Washington. The city is named after George Washington, military leader of the American Revolution and the first President of the United States. The District of Columbia and the city of Washington are coextensive and are governed by a single municipal government, so for most practical purposes they are considered to be the same entity (this was not always the case, though, as Georgetown was a separate city within the District until 1871). However, although there is a municipal government and a mayor, as per Article I, Section VIII, of the United States Constitution, Congress has the sole authority over this federal district and thus the municipal government and mayor exist in the shadows of Congress. It is commonly known as the District, D.C., or simply Washington. Historically, it was called the Federal City or Washington City.\n\nThe District of Columbia, founded on July 16, 1790, is a federal district as specified by the United States Constitution. The U.S. Congress has ultimate authority over the District of Columbia, though it has delegated limited local rule to the municipal government. The land forming the original District came from the states of Virginia and Maryland. However, the area south of the Potomac River (39 mi² or about 100 km²) was returned, or "retroceded", to Virginia in 1847 and now is incorporated into Arlington County and the City of Alexandria. The term "District of Columbia" is derived from an old poetic name for the United States, Columbia, which has fallen out of common use since the early 20th century.\n\nThe centers of all three branches of the U.S. federal government are in Washington, D.C., as well as the headquarters of most federal agencies. Washington also serves as the headquarters for the World Bank, the International Monetary Fund, and the Organization of American States, among other international (and national) institutions. All of this has made Washington the frequent focal point of massive political demonstrations and protests, particularly on the National Mall. Washington is also the site of numerous national landmarks, museums, and sports teams, and is a popular destination for tourists.\n\nThe population of the District of Columbia, as of 2003 U.S. Census Bureau estimates, is 563,384. The Greater Washington, D.C. metropolitan area includes the District of Columbia and parts of Maryland, Virginia, and West Virginia, with a population surpassing 4.7 million. If Washington, D.C., were considered a state, it would rank last in area behind Rhode Island, 50th in population ahead of Wyoming, and 36th in Gross State Product, ahead of 15 states, and its GSP per capita would be #1 by far compared to other states.
963687
There is no day of the year that has EXACTLY 12 hours of daylight and 12 hours of dark because no day is EXACTLY 24 hours long. A sidereal day is 23 hours, 56 minutes, 4.091 seconds long. On the equinoxes, we have approximately equal amounts of light and dark.
365798
http://physics.nist.gov/GenInt/Time/time.html
662286
Currently, it's 11:07 am in New York City, 10:07 am in Chicago, 9:07 am in Denver, and 8:07 am in Los Angeles.
644135
Between 10 p.m. to 12 in night.
437528
often the county sets forth the hours...7am to 10pm are the rules where I live.....however, with road construction it often goes on during the night to minimize the disruption to traffic...I have had to deal with this in the past and it can be very annoying...contact the county to find out the laws where you live.
178172
I believe London is 8 hours *ahead* of Washington state - if it's 1:00 p.m. in Washington, then it's 9:00 p.m. in London.