Timezone Converter
Convert a time from one timezone to another — handles daylight saving correctly using real IANA timezones.
How this works
This uses your browser's built-in Intl timezone database with real IANA zone identifiers (e.g. Asia/Kolkata, America/New_York) rather than fixed offsets like "EST" or "PST" — because US/Europe clocks shift for daylight saving twice a year, a fixed offset gives the wrong answer for roughly half the year. India (IST) doesn't observe daylight saving, so it stays at a constant +5:30 year-round.
Frequently asked questions
Why does the US timezone offset change depending on the date I pick?
Daylight saving time. "Eastern Time" is UTC-5 in winter (EST) and UTC-4 in summer (EDT) — picking a real date and using the actual IANA zone handles this automatically instead of guessing which one applies.
Does India observe daylight saving?
No — India Standard Time stays at a constant UTC+5:30 all year, which is one reason IST is a genuinely simpler zone to reason about than most Western zones.