what does gmt stand for in time standards?

Answer 1

Greenwich Mean Time

Answer 2

Everyone is right to point out that GMT = Greewich Mean Time. However, it is completely arbitrary and any line of longitude could have been chosen as the 0 degrees to measure from. There was no such standard measurement until the late 19th century, when Paris was suggested as the starting point, but at the time, the maritime superiority of Britain and the power of the Empire swayed the vote in favour of Greenwich, not only a major port on the Thames but the place of the Royal Observatory.

Answer 3

Greenwich Mean Time

The time at Greenwich, UK is considered as the standard time and time at other places are considered to be plus-minus from GMT to have a common understanding of the time in different places of the world. The places to the east of Greenwich are +GMT and the ones to the west are -GMT.

Answer 4

Greenwich Mean Time

All other countries in the world set there clocks according to GMT. Airlines base the times of most of their flights on GMT.

Answer 5

Greenwich Mean Time" (GMT) is a term originally referring to mean solar time at the Royal Greenwich Observatory in Greenwich in London. It is now often used to refer to Coordinated Universal Time (UTC) when this is viewed as a time zone, although strictly UTC is an atomic time scale which only approximates GMT in the old sense. It is also used to refer to Universal Time (UT), which is the astronomical concept that directly replaced the original GMT.

Noon Greenwich Mean Time is not necessarily the moment when the Sun crosses the Greenwich meridian (and reaches its highest point in the sky in Greenwich) because of Earth's uneven speed in its elliptic orbit and its axial tilt. This event may be up to 16 minutes away from noon GMT (this discrepancy is known as the equation of time). The fictitious mean sun is the annual average of this nonuniform motion of the true Sun, necessitating the inclusion of mean in Greenwich Mean Time.

Historically the term "GMT" has been used with two different conventions for numbering hours. The old astronomical convention was to refer to noon as zero hours, whereas the civil and more modern convention is to refer to midnight as zero hours. The more specific terms "UT" and "UTC" do not suffer this ambiguity, always referring to midnight as zero hours.

Answer 6

Greenwich Mean Time.

It is 0º0'0" Longtitude

It is the time zone for the uk and any other country on the 0º0'0" Longtitude line. This line runs through the Royal Observatory in Greenwich, London, UK.

GMT is used from the last Sunday in October to the last Sunday in March. BST - British Summer Time is used between March and October.

In October, clocks go back an hour, and forward an hour in March.

Fall Back - Spring Forward

Answer 7

Greenwich Mean Time

Answer 8

Greenwich Mean Time

Answer 9

Greenwich Mean Time

Answer 10

Greenwich Mean Time.