What Is UTC and Why Does It Matter?
UTC — Coordinated Universal Time — is the global standard that keeps every clock on Earth in sync. Learn what it is, how it works, and why it matters.
February 10, 2026·7 min read
Articles & Guides
In-depth guides on UTC, Daylight Saving Time, the history of time zones, and practical advice for scheduling across the globe.
UTC — Coordinated Universal Time — is the global standard that keeps every clock on Earth in sync. Learn what it is, how it works, and why it matters.
Daylight Saving Time shifts clocks forward in spring and back in autumn. But why? And why do dozens of countries ignore it entirely? A complete guide.
How did the world go from every town keeping its own solar time to a globally synchronised system of 38 UTC offsets? The full history of time zones.
Scheduling international meetings is one of the most common sources of confusion in remote work. Here is a practical, step-by-step guide to getting it right every time.
More than a dozen countries have abolished Daylight Saving Time in the past two decades. Here is why they did it and what happened after.
The IANA timezone database is the invisible infrastructure behind every clock on every device. Here is what it is, how it works, and why it matters.
From UTC+5:45 in Nepal to UTC+14 in Kiribati, some of the world's time zones defy simple logic. Here is the story behind the most unusual ones.
No app? No problem. Here is a clear, step-by-step method for converting between any two time zones manually, with worked examples.
Managing a team across multiple time zones is one of the defining challenges of remote work. Here are the strategies that high-performing distributed teams use.
Most time zones are whole-hour offsets from UTC, but India, Nepal, Iran, and others use half-hour or quarter-hour offsets. Here is why.
Need to track time across multiple cities? We review the best world clock apps and websites in 2026 — free and paid — so you can find the right tool for your needs.
The United States spans six time zones. Here's a clear guide to all of them — Eastern, Central, Mountain, Pacific, Alaska, and Hawaii — with cities, offsets, and DST rules.
The time difference between New York and London changes throughout the year due to Daylight Saving Time. Here's exactly how many hours apart they are — and when it changes.
China spans five geographic time zones but uses just one — UTC+8. Here's the fascinating history and politics behind this unusual decision, and what it means for daily life.
Time zone confusion causes missed meetings every day. Here are the practical habits, tools, and rules that eliminate the problem entirely — for remote workers and global teams.
Europe uses three main time zones — GMT, CET, and EET — but the picture is more complicated than it looks. Here's a complete guide to European time zones and DST rules.
GMT — Greenwich Mean Time — is the time standard that started it all. Here's the history of how a London observatory became the reference point for every clock on Earth.
Australia has five time zones — and some of the most unusual ones in the world. Here's a complete guide to Australian time zones, DST rules, and the quirky half-hour offsets.