Learn About Time Zones
Guides and articles about time zones, UTC, Daylight Saving Time, and best practices for scheduling across the globe.
Fundamentals
What is UTC and Why Does It Matter?
Learn about Coordinated Universal Time (UTC), the global time standard that keeps the world synchronized. Understand how UTC works and why it matters for travel, technology, and communication.
Understanding Daylight Saving Time (DST)
A complete guide to Daylight Saving Time — why we change clocks, which countries observe DST, when transitions happen, and how DST affects timezone conversions.
How Time Zones Work: A Complete Guide
A comprehensive guide to how time zones work — from UTC offsets and DST to political boundaries and unusual half-hour zones. Everything you need to understand global timekeeping.
GMT vs UTC: What's the Difference?
GMT and UTC are often used interchangeably, but they are technically different. Learn the key differences between Greenwich Mean Time and Coordinated Universal Time.
What is the International Date Line?
Learn about the International Date Line — the imaginary line where the calendar date changes. Understand why it exists, where it runs, and how it affects travel and communication.
Practical Guides
Time Zone Abbreviations Explained
A guide to timezone abbreviations like EST, PST, GMT, CET, and IST. Learn what they mean, why some are ambiguous, and when to use IANA timezone names instead.
Best Practices for Scheduling Across Time Zones
Practical tips and strategies for scheduling meetings, calls, and events across multiple time zones. Avoid common pitfalls and find the best times for global teams.