What is GMT?
GMT, also known as Coordinated Universal Time (UTC) is calculated at the prime meridian (0° longitude) based on the mean solar time observed at the Royal Observatory. It averages out variations in the Earth’s rotation speed to provide a stable and consistent time reference. GMT has a fixed offset of UTC+00:00. This means that GMT is equivalent to UTC, with no variation throughout the year.
GMT serves as a global reference for timekeeping and is widely used in aviation, navigation, and international telecommunications. It is the standard against which other time zones are compared.
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Difference Between GMT And IST
Difference Between GMT And IST: GMT and IST are two distinct time zones, which are used to determine the local time at different places around the world. The time zone is a geographic region within which the same standard time is used. Greenwich Mean Time (GMT) is the time zone located at the Prime Meridian (0° longitude) in Greenwich, England. Indian Standard Time (IST) is the official time zone adopted by India. It has an offset of UTC +05:30, making it 5 hours and 30 minutes ahead of GMT. So Indian Standard Time is 5 hours and 30 minutes ahead of Greenwich Mean Time.
Table of Content
- What is GMT?
- What is IST?
- Difference Between GMT and IST
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