Hour

The hour (common symbol: h or hr) is a unit of measurement of time. In modern usage, an hour comprises 60 minutes, or 3,600 seconds. It is approximately 1/24 of a mean solar day.

An hour in the Universal Coordinated Time (UTC) time standard can include a negative or positive leap second, and may therefore have a duration of 3,599 or 3,601 seconds for adjustment purposes.

Although it is not a standard defined by the International System of Units, the hour is a unit accepted for use with SI, represented by the symbol h.

Read more about HourEtymology, History, Counting Hours, Derived Measures and Applications

Other articles related to "hour, hours":

Rush Hour
... A rush hour or peak hour is a part of the day during which traffic congestion on roads and crowding on public transport is at its highest ...
Miles Per Hour
... Miles per hour is an imperial unit of speed expressing the number of statute miles covered in one hour ... a judge considered a speeding case by examining speeds in both kilometres per hour and miles per hour ... the knot as a common unit of speed one knot is one nautical mile per hour ...
Hour - Derived Measures and Applications
... per second, in everyday usage kilometres per hour or, in the USA and the UK, miles per hour are more practical ... Occasionally the metre per hour is used for slow-moving objects like snails ... Worker compensation is commonly based on working time in terms of number of hours worked, referred to as an hourly wage ...
KYW (AM) - Station Identifications - KYW Jingle
... At the top of every hour, a recording of Dick Covington (who died in 2004 all other station imaging is done by Sean Caldwell) is played announcing the ... New Jersey, and Delaware." At 02, 12, 22, 32, 42 and 52 after the hour, traffic transit reports ("on the twos") are introduced with car horns sounding ... At 30 past the hour, the recording is slightly different, with Covington announcing that "the newswatch never stops" (borrowed from sister station WINS), and that KYW is "the news authority in Philadelphia ...
PortAventura Park - Major Rides
... Speed Height Length Year Shambhala Expedición al Himalaya Bolliger Mabillard 83 miles per hour (134 km/h) 249 feet (76 m) 5,410 feet (1,650 m) 2012 ...

Famous quotes containing the word hour:

    Well, the world has a million writers. One would think, then, that good thought would be as familiar as air and water, and the gifts of each new hour would exclude the last. Yet we can count all our good books; nay, I remember any beautiful verse for twenty years.
    Ralph Waldo Emerson (1803–1882)

    Around, the night drops swiftly down
    Its veils; does not condemn
    Or praise the different actions done.
    The hour that strikes across the town
    Caresses all and injures none
    As sleep approaches them.
    Philip Larkin (1922–1986)

    In the hour of my distress,
    When temptations me oppress,
    And when I my sins confess,
    Sweet Spirit comfort me!
    Robert Herrick (1591–1674)