Standard Time

Standard time is the result of synchronizing clocks in different geographical locations within a time zone to the same time rather than using the local meridian as in local mean time or solar time. Historically, this helped in the process of weather forecasting and train travel. The concept became established in the late 19th century. The time so set has come to be defined in terms of offsets from Universal Time. Where daylight saving time is used, the term standard time typically refers to the time without the offset for daylight saving time.

The adoption of Standard Time, because of the inseparable correspondence between time and longitude, solidified the concepts of halving the globe into an eastern and western hemisphere, with one Prime Meridian (as well its opposite International Dateline) replacing the various Prime Meridians that were in use.

Other articles related to "time, standard time":

Chamorro Time Zone
... The Chamorro Time Zone, formerly the Guam Time Zone, is a United States time zone which observes standard time ten hours ahead of Coordinated Universal Time (UTC+1000) ... The clock time in this zone is based on the mean solar time of the 150th meridian east of the Greenwich Observatory ... Since Daylight Saving Time (DST) is not observed anywhere in this zone, the time is always known as Chamorro Standard Time (ChST) ...
Myanmar Standard Time
... Myanmar Standard Time (MST) (Burmese မြန်မာ စံတော်ချိန်, formerly, Burma Standard Time) is the standard time in Myanmar (Burma), 630 hours ... MST is used all year round as Myanmar does not observe daylight saving time ...
Time In Malaysia - History
... - locations in British Malaya with an Astronomical Observatory would adopt the local mean time based on the Observatory's geographical position ... hence, the three Straits Settlements had their respective Local Mean Time, with minutes of differences amongst the three locations. 1901 - On 1 January 1901 an Singapore Local Mean Time (Singapore Mean Time) was adopted by Straits Settlements and Federated Malay States as the Standard Time ...
History of Standard Time - North America
... States railroads each chose their own time standards ... Almost all railroads out of New York ran on New York time, but the Pennsylvania Railroad used Philadelphia time from Jersey City to Pittsburgh ... Railroads west from Chicago mostly used Chicago time, but between Chicago and Pittsburgh/Buffalo the norm was Columbus time, even on railroads like the PFtW C and LS MS that didn't run through Columbus ...
Time In India - Recorded History - Ancient India
... One of the earliest known descriptions of standard time in India appeared in the 4th century CE astronomical treatise Surya Siddhanta ... meridian of Ujjain, and was divided into smaller time units in the following manner Time that is measurable is that which is in common use, beginning with the prāṇa (or, the time span of one breath) ... Taking a day to be 24 hours, the smallest time unit, prāṇa, or one respiratory cycle, equals 4 seconds, a value consistent with the normal breathing frequency of 15 breaths/min used in modern medical research ...

Famous quotes containing the words time and/or standard:

    MacDonagh and MacBride
    And Connolly and Pearse
    Now and in time to be,
    Wherever green is worn,
    Are changed, changed utterly:
    A terrible beauty is born.
    William Butler Yeats (1865–1939)

    I find it interesting that the meanest life, the poorest existence, is attributed to God’s will, but as human beings become more affluent, as their living standard and style begin to ascend the material scale, God descends the scale of responsibility at a commensurate speed.
    Maya Angelou (b. 1928)