Time Zone Converter

Time zones are regional offsets from UTC (Coordinated Universal Time). Each zone has a canonical IANA identifier like America/New_York or Asia/Tokyo, and these identifiers — not abbreviations like EST or PST — are what software uses to handle history, future dates, and daylight saving time correctly.

Daylight saving time makes conversions tricky. Most US zones shift between EST (UTC-5) and EDT (UTC-4) on different dates than European zones. Some countries (Japan, India, most of Africa) never observe DST. A few zones have offsets that aren't whole hours — India is UTC+5:30, Nepal is UTC+5:45. This converter uses the browser's built-in Intl API, which is backed by the IANA tz database and handles DST automatically for any date you pick.

When scheduling across zones, the safest approach is to pick a specific date and time and let the tool compute each party's local time. Common overlap windows for US-Europe meetings: 8-11am Pacific = 5-8pm Central European. For US-Asia: the overlap is narrow — late evening on one side, early morning on the other.