Time Converter

The widget below will convert your local time to Coordinated Universal Time, abbreviated as UTC. UTC is a modern version of GMT. More information about time is available at THIS LINK.

Sidereal time is a system of timekeeping used primarily by astronomers and ocean navigators (using sextants to sight different stars and planets), based on the Earth's rotation relative to the fixed stars rather than the Sun. A sidereal day is approximately 23 hours, 56 minutes, and 4 seconds long, making it about 4 minutes shorter than a solar day.

More information on the various time measurements can be found at THIS LINK.

Use this handy widget to find Greenwich Mean Time (GMT) and Local Mean Sidereal Time (LMST).