Itqualityassurance
- Should I write UTC or GMT?
- Should dates be stored as UTC?
- Is GMT now UTC?
- Why do we use UTC instead of GMT?
Should I write UTC or GMT?
Greenwich Mean Time (GMT) is often interchanged or confused with Coordinated Universal Time (UTC). But GMT is a time zone and UTC is a time standard.
Should dates be stored as UTC?
It is important that there is consistency across all your date-related data. When storing dates in the database, they should always be in UTC. If you are not familiar with what UTC is, it is a primary time standard that all the major timezones are based on. The major timezones are just offsets from UTC.
Is GMT now UTC?
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). It is also known as "Z time" or "Zulu Time".
Why do we use UTC instead of GMT?
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.
