Time Zone Converter

Convert any date and clock time between global time zones with automatic Daylight Saving Time handling and day-offset indicators.

Dual world clocks & timezone conversion.
US Eastern (New York)
October 10, 2026 · 4:26 AMSame day
India (Kolkata)
UTC+05:30
US Eastern (New York)
UTC-04:00

Daylight Saving Time is accounted for automatically.

Worked Example — 3:00 PM in India, converted to US Eastern

5:30 AMSame day — India (UTC+05:30) to US Eastern (UTC-04:00, daylight saving in effect)

Common Mistakes to Avoid

  • A fixed UTC offset gets daylight saving time wrong — this uses real time zone identifiers instead. Zones like America/New_York shift between UTC-5 and UTC-4 depending on the time of year. Treating it as a fixed "UTC-5" would give the wrong answer for half the year — this calculator uses the actual IANA time zone database, so DST transitions are handled automatically.
  • This doesn't generate a Discord timestamp code. Discord's own <t:...> timestamp format (which auto-displays in each viewer's local time in chat) is a specific markup snippet, not a plain time conversion — this calculator converts a date/time between zones, but doesn't produce that Discord-specific code.

References

  • IANA Time Zone Database (tz database) — the source of truth for time zone rules and DST transitions used by this calculator

Last reviewed July 2026

Why Use the Time Zone Converter?

  • Converts time accurately across hundreds of global IANA timezones
  • Full automatic Daylight Saving Time (DST) seasonal adjustment
  • Calculates exact day offset (same day, yesterday, or tomorrow)
  • Supports fractional UTC offsets (such as India IST +05:30 and Nepal +05:45)
  • One-click city swap for round-trip meeting and flight coordination
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