Frequently Asked Questions
GMT (Greenwich Mean Time) is a time zone and the mean solar time at the Royal Observatory in Greenwich, London. UTC (Coordinated Universal Time) is a more scientifically precise atomic time standard that forms the basis for all civil timekeeping. For most practical purposes, the two are identical.
There are over 24 time zones in the world, as some regions use half-hour or even quarter-hour offsets from the standard UTC offsets.
The tool uses a feature in your web browser that automatically detects your local time zone based on your computer’s settings. This saves you the trouble of manually looking up and entering your current time zone.
Yes. Since the tool factors in Daylight Saving Time and other rules, you can use it to accurately convert dates and times in the past or far into the future.
The tool uses a comprehensive database that is programmed to handle all standard time zone offsets, including those with half-hour (e.g., India Standard Time, UTC+5:30) and quarter-hour offsets.