Time, Date & Timezone CalcyZone Calculator
World Clock
Real time global world clock with digital and analog displays, IANA time zones, and country flags.
🌐 Global World Clock
Real time digital & analog clocks across global IANA time zones with DST accuracy.
New York
United States
🌙 Night
Analog clock showing 5:14:02 for New York
05:14:02 AM
Thu, Oct 29, 2026
UTC-4:00America/New_York
London
United Kingdom
☀️ Day
Analog clock showing 9:14:02 for London
09:14:02 AM
Thu, Oct 29, 2026
UTC+0:00Europe/London
Tokyo
Japan
🌙 Night
Analog clock showing 6:14:02 for Tokyo
06:14:02 PM
Thu, Oct 29, 2026
UTC+9:00Asia/Tokyo
Mumbai
India
☀️ Day
Analog clock showing 2:44:02 for Mumbai
02:44:02 PM
Thu, Oct 29, 2026
UTC+5:30Asia/Kolkata
Sydney
Australia
🌙 Night
Analog clock showing 8:14:02 for Sydney
08:14:02 PM
Thu, Oct 29, 2026
UTC+11:00Australia/Sydney
Mathematical Formula
Local Time = UTC Time plus IANA Time Zone Offset (DST adjusted)
Overview & Explanation
Interactive global world clock featuring real time digital and SVG analog clock visualizers for cities worldwide using native IANA time zone rules.
How It Works
- Queries standard IANA time zone definitions and updates digital and analog hands live via browser system ticks.
Practical Applications
- Coordinating international calls.
- Global remote team management.
- Travel schedule tracking.
Worked Example: London vs Tokyo current time
Compare current times.
1
Evaluate IANA Offsets
London (Europe/London) vs Tokyo (Asia/Tokyo)
= Tokyo is 8 hours ahead of London (or 9 hours depending on BST)
Frequently Asked Questions
What is a world clock?
A world clock displays current local times across multiple cities and time zones worldwide simultaneously.
Does this world clock account for Daylight Saving Time?
Yes. Our world clock uses official IANA time zone data which automatically accounts for Daylight Saving Time transitions.
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