Search Timezone Database
Find detailed timezone information for any city or region worldwide
Major Timezone Regions
North America
Covers USA, Canada, and parts of Mexico with comprehensive DST observance.
Europe
European timezones with coordinated DST transitions in March and October.
Asia-Pacific
Diverse timezone landscape with varying DST policies across the region.
Daylight Saving Time Rules
DST Observance by Region
North America
Start: Second Sunday in March (2:00 AM → 3:00 AM)
End: First Sunday in November (2:00 AM → 1:00 AM)
Duration: ~8 months
Europe
Start: Last Sunday in March (1:00 AM → 2:00 AM UTC)
End: Last Sunday in October (2:00 AM → 1:00 AM UTC)
Duration: ~7 months
Australia
Start: First Sunday in October (2:00 AM → 3:00 AM)
End: First Sunday in April (3:00 AM → 2:00 AM)
Duration: ~6 months
Non-DST Regions
Major Non-Observing Regions:
- Most of Asia (China, Japan, India, Southeast Asia)
- Most of Africa
- Most of South America
- Russia (since 2014)
- Arizona (except Navajo Nation)
- Hawaii
- Most of Queensland, Australia
Reasons for Non-Observance:
- Minimal seasonal daylight variation near equator
- Economic and social disruption concerns
- Energy savings not significant
- Agricultural and business preferences
- Government policy decisions
Major Cities Database
| City | Country | Timezone | UTC Offset | DST | Current Time |
|---|
Timezone Abbreviations Guide
North American Abbreviations
European Abbreviations
Asia-Pacific Abbreviations
Understanding Timezone Data
How to Read Timezone Information
UTC Offset Format:
UTC offsets are expressed as +/- hours:minutes from Coordinated Universal Time. For example, UTC+5:30 means 5 hours and 30 minutes ahead of UTC.
Timezone Identifiers:
IANA timezone identifiers (like America/New_York) provide the most accurate timezone information, including historical changes and DST rules.
DST Indicators:
Dual offsets (like UTC-5/-4) indicate standard time and daylight saving time offsets respectively.
Database Accuracy & Updates
Data Sources:
Our database is maintained using official IANA timezone data, government announcements, and verified international standards.
Update Frequency:
Timezone rules are updated immediately when governments announce changes, ensuring accuracy for business and personal use.
Historical Data:
Our database includes historical timezone changes, allowing for accurate time calculations for past dates.
Developer Resources
JSON API Access
Access our timezone database programmatically with RESTful API endpoints.
Real-time Data
Get current time, DST status, and timezone information updated in real-time.
Documentation
Comprehensive API documentation with examples and integration guides.