World Clock
Check current time in cities around the world
New York
(USA)London
(UK)Tokyo
(Japan)Sydney
(Australia)How Time Zones Work
The world is divided into 24 time zones, each representing 15 degrees of longitude. This system was established to standardize time across the globe, with Coordinated Universal Time (UTC) serving as the reference point. Time zones help coordinate activities across different regions and ensure consistent timekeeping worldwide.
Business and Communication Benefits
A world clock is essential for international business, remote work, and global communication. It helps schedule meetings across time zones, coordinate project deadlines, and maintain relationships with international clients and colleagues. Understanding time differences prevents scheduling conflicts and shows respect for others' local time.
Daylight Saving Time Considerations
Many countries observe Daylight Saving Time (DST), which can temporarily change the time difference between locations. Our world clock automatically accounts for these changes, ensuring accurate time display throughout the year. DST typically runs from spring to fall in participating regions.
Travel and Planning Applications
- Flight Planning: Calculate arrival times and jet lag effects
- Event Coordination: Schedule global webinars and conferences
- Market Trading: Track international stock market hours
- Family Communication: Find optimal times to call relatives abroad
- Content Publishing: Time social media posts for global audiences
Time Zone Facts and Trivia
Interesting Facts:
- • China uses only one time zone despite its size
- • Some countries use 30 or 45-minute offsets
- • The International Date Line creates a 24-hour difference
- • Nepal has a unique +5:45 UTC offset
Extreme Time Zones:
- • Baker Island: UTC-12 (earliest time)
- • Kiribati: UTC+14 (latest time)
- • Samoa: Skipped December 30, 2011
- • Russia spans 11 time zones
Professional Time Management Tips
Meeting Scheduling
When scheduling international meetings, consider everyone's working hours and try to find times that are reasonable for all participants. Use scheduling tools that display multiple time zones simultaneously.
Communication Etiquette
Always include time zone information in meeting invitations and deadlines. Be mindful of local holidays and working hours when contacting international colleagues or clients.
Digital Tools Integration
Use calendar applications that automatically convert time zones and set up world clocks on your devices for frequently contacted regions. This helps maintain awareness of global time differences.
Related Calculators
Convert time between different time zones worldwide
Track and calculate total work hours and overtime
Calculate overtime pay and total compensation
Calculate Body Mass Index and health category assessment