Convert any time between world timezones instantly. Supports all IANA timezones including UTC, EST, PST, CET, JST, IST, and more. See what time it is right now across major cities. Perfect for scheduling meetings across time zones, planning international calls, or checking business hours abroad.
Coordinating across time zones is a daily challenge for remote teams, international businesses, and global travelers. The difference between UTC+5:30 (India) and UTC-8 (US Pacific) is 13.5 hours — when it's 9 AM in San Francisco, it's 10:30 PM in Mumbai. This converter handles all standard time zones including half-hour (India +5:30, Iran +3:30) and quarter-hour (Nepal +5:45) offsets. It accounts for Daylight Saving Time transitions, which different countries observe on different dates — or not at all. Compare multiple time zones simultaneously to find meeting times that work for distributed teams. All calculations use the Intl API for accurate, up-to-date timezone data.
DST shifts clocks forward/backward by 1 hour, but different regions change on different dates. The US changes in March/November, Europe in March/October, and many countries don't observe DST at all. This tool uses your browser's timezone database which stays current with these changes.
UTC (Coordinated Universal Time) is the global time standard. It doesn't change with seasons (no DST). All time zones are defined as offsets from UTC: New York is UTC-5 (or UTC-4 during DST), London is UTC+0 (or UTC+1 during BST).
Timezone offsets aren't always whole hours. India (UTC+5:30), Iran (UTC+3:30), Myanmar (UTC+6:30), Nepal (UTC+5:45), and parts of Australia (UTC+9:30) use non-standard offsets based on geographic and political decisions.
Add all relevant time zones and look for overlapping business hours (typically 9-17). For extreme differences (US West Coast to Asia), there may be only 1-2 hours of overlap. Consider rotating meeting times to share the inconvenience.
Countries occasionally change their timezone offset. Recent examples: Samoa skipped a day in 2011 to switch sides of the date line, and Turkey permanently moved to UTC+3 in 2016. This tool uses current timezone rules.