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 ...
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 following ... 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 the first five notes of ... 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 ...
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 ... based on working time in terms of number of hours worked, referred to as an hourly wage ...
Miles Per Hour
... Miles per hour is an imperial unit of speed expressing the number of statute miles covered in one hour ... in Ireland, a judge considered a speeding case by examining speeds in both kilometres per hour and miles per hour ... unit of speed one knot is one nautical mile per hour ...
PortAventura Park - Major Rides
... Expedición al Himalaya Bolliger Mabillard 83 miles per hour (134 km/h) 249 feet (76 m) 5,410 feet (1,650 m) 2012 Dragon Khan Bolliger Mabillard 65 miles ...

Famous quotes containing the word hour:

    Under certain circumstances there are few hours in life more agreeable than the hour dedicated to the ceremony known as afternoon tea.
    Henry James (1843–1916)

    That hour in the life of a man when first the help of humanity fails him, and he learns that in his obscurity and indigence humanity holds him a dog and no man: that hour is a hard one, but not the hardest. There is still another hour which follows, when he learns that in his infinite comparative minuteness and abjectness, the gods do likewise despise him, and own him not of their clan.
    Herman Melville (1819–1891)

    The hour of the waning of love has beset us,
    And weary and worn are our sad souls now;
    Let us part, ere the season of passion forget us,
    With a kiss and a tear on thy drooping brow.
    William Butler Yeats (1865–1939)