🌍 Global Time & Scheduling
Timezone Converter
Convert date and time between global cities and time zones with automatic Daylight Saving Time (DST) adjustments.
Popular City Pairs:
London ➔ New York
New York ➔ Tokyo
London ➔ Dubai
San Francisco ➔ Sydney
UTC ➔ Paris
Converted World Time
Converted time will appear here...
Global Timezone Architecture & Scheduling
Earth rotates 360 degrees of longitude once every 24 hours, meaning the sun moves across roughly 15 degrees of longitude each hour. In 1884, the International Meridian Conference established Greenwich, London as the Prime Meridian ($0^\circ$ longitude), dividing the globe into 24 standard one-hour time zones.
Major Global Business Hubs Time Reference
| City / Region | Standard Timezone | Standard Offset | Daylight Saving (DST) Observed? |
|---|---|---|---|
| London, UK | GMT / BST | UTC+0 / UTC+1 | Yes (Late March to Late October) |
| New York, USA | EST / EDT | UTC-5 / UTC-4 | Yes (Early March to Early November) |
| San Francisco, USA | PST / PDT | UTC-8 / UTC-7 | Yes (Early March to Early November) |
| Tokyo, Japan | JST | UTC+9 | No (Fixed year-round) |
| Sydney, Australia | AEST / AEDT | UTC+10 / UTC+11 | Yes (October to April - Southern Hemisphere) |
| Dubai, UAE | GST | UTC+4 | No (Fixed year-round) |
Frequently Asked Questions
The International Date Line sits roughly along the 180th meridian in the Pacific Ocean. Crossing it traveling westward causes you to gain a full calendar day (+24 hours), while traveling eastward causes you to repeat a calendar day (-24 hours).
Several nations chose non-hourly offsets for geographic or political cohesion: India and Sri Lanka use UTC+5:30 (IST); Nepal uses UTC+5:45; parts of Australia (Adelaide and Darwin) use UTC+9:30; and Newfoundland, Canada uses UTC-3:30.