Menu
Prior to 1972, this time was called Greenwich Mean Time (GMT) but is now referred to as Coordinated Universal Time or Universal Time Coordinated (UTC). It is a coordinated time scale, maintained by the Bureau International des Poids et Mesures (BIPM).
Although there was GMT, a committee at the United Nations officially adopted UTC as a standard. This is because it is more accurate than GMT for setting clocks. Coordinated Universal Time and Greenwich Mean Time is used interchangeably; that's why knowing their difference is a must, especially when dealing with time.
At that point in time, half the year their offset-from-UTC is one hour ahead of UTC/GMT. That locality's decision does not change GMT, it changes their time zone.
From Coordinated Universal Time on Wikipedia:
Coordinated Universal Time (UTC) is a time standard based on International Atomic Time (TAI) with leap seconds added at irregular intervals to compensate for the Earth's slowing rotation.
From Greenwich Mean Time on Wikipedia:
UTC is an atomic time scale which only approximates GMT with a tolerance of 0.9 second
One is measured from the sun and another from an atomic clock.
For your purposes, they are the same.
For computers, GMT is UTC+0 - so they are the equivalent.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With