Time Zone Guides
Easy-to-follow articles on UTC, daylight saving time, and time differences
The Difference Between UTC and GMT
UTC and GMT are both references for world time — so how do they differ? We break down the origins of each standard and how they're used in practice.
Daylight Saving Time (DST), Fully Explained
How the practice of setting clocks forward an hour in summer works, and why different countries apply it differently.
How Time Zones Work
The basic principle behind dividing the Earth into 24 zones, and why there are actually more than 24 in reality.
Using a World Clock for Remote Teams
Practical tips for teams spread across time zones to set meeting times and respect each other's working hours.
How to Read UTC Offsets
How to read notation like UTC+9 and UTC−5:30 accurately and quickly calculate the time difference between two cities.
Understanding Time Zone Abbreviations (EST, PST, KST)
What abbreviations like EST, PST, KST, and CET mean, and why the abbreviation alone isn't enough.