Världsklocka & Tidszonsomvandlare
Jämför tider i världens städer och hitta gemensamma arbetstider.
New York
Primary AnchorUnited States • Eastern Daylight Time (EDT)
London
+5 hrs aheadUnited Kingdom • British Summer Time (BST)
Tokyo
+13 hrs ahead (Tomorrow)Japan • Japan Standard Time (JST)
Sydney
+15 hrs ahead (Tomorrow)Australia • Australian Eastern Daylight Time (AEDT)
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Mutual daylight overlap between US East & Western Europe: 09:00 - 11:30 AM EDT (14:00 - 16:30 BST).
Financial Synchronization
Market Open Bell Convergence
Track critical trade settlements between London (LSE), New York (NYSE), and Tokyo (TSE) to eliminate rollover discrepancy and off-hours order slips.
Async Collaboration
24-Hour Follow-the-Sun Handoffs
Align sprint standups and emergency incident escalations seamlessly across remote engineering squads spanning 14+ standard offsets.
Global Business Hours Comparison Matrix
Standard 09:00 - 17:00 local corporate windows mapped against UTC offsets.
| Hub Location | TZ Code | UTC Offset | Standard Workday (Local) | UTC Equivalent | NY (EDT) Overlap |
|---|---|---|---|---|---|
| 🇺🇸 San Francisco | PDT | UTC-7 | 09:00 – 17:00 | 16:00 – 00:00 | 5.0 Hours (Full PM) |
| 🇺🇸 New York | EDT | UTC-4 | 09:00 – 17:00 | 13:00 – 21:00 | Master Origin |
| 🇬🇧 London | BST | UTC+1 | 09:00 – 17:00 | 08:00 – 16:00 | 3.0 Hours (Late AM) |
| 🇩🇪 Berlin / Frankfurt | CEST | UTC+2 | 09:00 – 17:00 | 07:00 – 15:00 | 2.0 Hours (9-11 AM) |
| 🇦🇪 Dubai | GST | UTC+4 | 09:00 – 17:00 | 05:00 – 13:00 | 0.0h (Async Only) |
| 🇯🇵 Tokyo | JST | UTC+9 | 09:00 – 17:00 | 00:00 – 08:00 | Asynchronous Loop |
| 🇦🇺 Sydney | AEDT | UTC+11 | 09:00 – 17:00 | 22:00 – 06:00 | 1.0 Hour (Early/Late) |
How Global Time Zones and Daylight Saving Time (DST) Work
Mathematical foundations of civil chronometry, solar longitudinal subdivisions, and the automated mechanisms powering TimeBetween’s global engine.
UTC & The Prime Meridian
Coordinated Universal Time (UTC) serves as the primary civil time standard worldwide. Spanning the Royal Observatory in Greenwich (0° Longitude), Earth is theoretically segmented into twenty-four 15-degree longitudinal wedges, each accounting for an hour interval.
Daylight Saving Shifts (DST)
Over seventy nations modify local standard clocks during spring and autumn seasons to extend evening daylight. Because northern and southern hemisphere seasonal transitions occur on desynchronized weeks, international offsets fluctuate by up to 2 hours twice per calendar year.
The International Date Line
Located predominantly along the 180th meridian through the Pacific Ocean, crossing this line shifts calendar calculations forward or backward by an entire twenty-four hour day. When Tokyo or Auckland conducts morning meetings on Thursday, US West Coast is concluding Wednesday afternoon.
Frequently Asked Questions
Key considerations when planning synchronizations and timezone arithmetic.