Local mean time (LMT) is a form of solar time that corrects the variations of local apparent time, forming a uniform time scale at a specific longitude...

Greenwich Mean Time (GMT) is the local mean time at the Royal Observatory in Greenwich, London, counted from midnight. At different times in the past,...

types of time reckoning based on astronomical observations: apparent solar time and mean solar time (discussed in this article), and sidereal time, which...

Local time is the time observed in a specific locality. There is no canonical definition. Originally it was mean solar time, but since the introduction...

Washington Mean Time was sometimes called Washington Meridian Time. It was never used as the basis of any time zone, although it was the local mean time of the...

local time until 1900, then tried Central Standard Time, local mean time, and Eastern Standard Time (EST) before a May 1915 ordinance settled on EST and...

remain closer to continental European time, resulting in legal times significantly in advance of local solar time; this is of little practical significance...

its mission time scale matches local mean time. However, for atmospheric measurements and other science purposes, Local True Solar Time is recorded....

second of mean solar time at 0° longitude, the currently used prime meridian, and is not adjusted for daylight saving time. The coordination of time and frequency...

standard time zones, each local city or town was free to determine its local time, called local mean time. Western Australia uses Western Standard Time; South...

Indochina Time, which is seven hours ahead of UTC. The local mean time in Bangkok was originally UTC+06:42:04. Thailand used this local mean time until 1920...

At the time, local mean time was used to set clocks, meaning that every place used its own local time based on its longitude because the time was measured...

never observed daylight saving time. It shares WAT with fourteen other countries in Africa. Nigeria's local mean time was UTC+00:13:35. Prior to 1 January...

observer's latitude and the season). A mean solar day (what we normally measure as a "day") is the average time between local solar noons ("average" since this...

UTC. The local mean time in Phnom Penh was originally UTC+7:19. Cambodia used this local mean time until 1920, when it changed to Indochina Time, UTC+07:00;...

place. Due to this political decision, Spain is two hours ahead of its local mean time during the summer, one hour ahead in winter. Andorra Belgium Most of...

Universal Time (UTC). Malaysia does not observe daylight saving time. The local mean time in Kuala Lumpur was originally GMT+06:46:46, while the local mean time...

its time offset is eight hours (UTC−08:00). The clock time in this zone is based on mean solar time at the 135th meridian west of the Greenwich Observatory...

observation of the sun to set their clocks, which means they used local mean time, every city different based on their longitude. Detroit used 05:32:11...

Until the advent of the railways, the United Kingdom used local mean time. Greenwich Mean Time was adopted first by the Great Western Railway in 1840 and...

Standard time is the synchronization of clocks within a geographical region to a single time standard, rather than a local mean time standard. Applied...

Dublin Mean Time, is local mean time at Dunsink Observatory and was official time in Ireland between 1880 and 1916. Dublin Mean Time was introduced by the...

occasion when different local mean times were synchronised and a single standard time applied. The key goals behind introducing railway time were to overcome...

different local mean time based on its longitude. For example, Sitka, the capital of Alaska at the time, at longitude 135°20′W, had a local time equivalent...

Coordinated Universal Time Local mean time, a form of solar time that corrects the variations of local apparent time Washington Mean Time, the time at the meridian...

the Sun, and mean solar time, which tracks a theoretical mean Sun with uniform motion along the celestial equator. Apparent solar time can be obtained...

official local time and the mean solar time is about two and a half hours during summer time. There have been political pushes to change the official time so...

Thus the local mean time in most of Ireland is closer to UTC-01:00 time than to GMT. The Standard Time Act 1968 legally established that "the time for general...

of time, and its angular extent is the difference between the greatest positive and negative deviations of local solar time from local mean time when...

United Kingdom The time around the world is based on Universal Coordinated Time (UTC) which is roughly synonymous with Greenwich Mean Time (GMT). From late...