what is Greenwich mean time?

Answer 1

Greenwich England is the place where the atomic clock is set and is techically where the day of the world starts. All time is measured either hours to the east or west of Greenwich Mean time.

Answer 2

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 3

"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.

Source: Wikipedia

Answer 4

Greenwich is a place in England near London. In olden days people used to keep the local time in Greenwich as the base time for time calculation due to various reasons. Hence the time is called GMT or Greenwich Mean Time. Every country has based its local time with a reference to GMT. It can be either minus so many hours or plus so many hours and minutes to the GMT. In India it is GMT +5.30hours and if its 0500hrs in GMT it should be 1030hrs in India. Local time in Tokyo would be almost 12hours ahead of GMT. GMT is now known as UTC or universal time coordinator and UT is used by airlines all over the world to calculate time. For further info please visit wikipedia or answers.com.

Answer 5

Greenwich mean time is the special time the reformed Grinch (who stole Christmas) set aside for himself to be grumpy and unpersonable.

Answer 6

Greenwhich time is the time that the atomic clock is set to. Which every clock is based on the time from the atomic Clock. When you look at the the time zones and it says -/+ next to an hour the time there is either ahead or behind the atomic clock by that many hours http://wwp.greenwichmeantime.com/gmt-converter.htm

Answer 7

Once upon a time there was a green witch who legend says was really mean. She would pick up young men then she when they would become romantic she would spank them really bad for having erotic thoughts.
Now when young men have erotic thoughts and want to suppress them they think about Greenwitch mean time and it is as effective as a cold shower. But that is another legend.

Answer 8

Grinch Mean Time

Answer 9

English Time. From UK.
I Corinthians 13;8a, Love never fails!!!!!

Answer 10

its the time at the Prime Meridian