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Convert time between world time zones with an interactive world clock display
Convert 9:00 AM EST to GMT: Select EST as source, GMT as target. Result: 2:00 PM (14:00). London is 5 hours ahead of New York.
Convert 20:00 JST to PST: Select JST as source, PST as target. Result: 3:00 AM (-1 day). Los Angeles is 17 hours behind Tokyo.
Convert 10:30 IST to AEST: Select IST as source, AEST as target. Result: 4:00 PM (16:00). Sydney is 4.5 hours ahead of Mumbai.
This calculator uses standard time zone offsets and does not automatically adjust for daylight saving time (DST). During DST periods, you may need to manually adjust by one hour. DST dates vary by country and region.
Some countries chose offsets that better match their geographic position relative to the sun. India uses UTC+5:30, Nepal uses UTC+5:45, and several other regions use non-standard offsets. These are historically and geographically determined.
When converting across many time zones, the result may fall on a different day. '+1 day' means the converted time is the next day, and '-1 day' means the previous day. For example, 11 PM in New York is already 4 AM the next day in London.