thetimezone guides & articles
10 in-depth guides on The Time Zone and related topics.
Scheduling across zones
Scheduling across zones
Best Times to Call Between the US and Asia
The best times to call between the US and Asia despite a near-opposite clock, with overlap windows for each US zone, the date-change catch, and simple rules.
Scheduling across zones
Best Times to Call Between the US and Europe
The best times to call between the US and Europe, with overlap hours for each US zone, the daylight saving gap trap, and simple rules for booking transatlantic calls.
Scheduling across zones
How to Schedule a Meeting Across Time Zones
A practical guide to scheduling meetings across time zones, covering how to find overlap hours, handle daylight saving, anchor to UTC, and dodge classic mistakes.
World time & travel
World time & travel
Current Time in Europe Explained: Zones & Rules
The current time in Europe explained, covering the three main zones, which countries sit where, how summer time works, and the odd exceptions that catch travelers.
World time & travel
The International Date Line Explained Simply
The International Date Line explained simply, covering where it runs, why it zigzags, how crossing it adds or subtracts a day, and how tomorrow can exist today.
Time zones explained
Time zones explained
How Time Zones Work: A Clear, Complete Guide
A clear, complete guide to how time zones work, covering the 15-degrees-per-hour rule, UTC offsets, the odd half-hour zones, and how to compare times worldwide.
Time zones explained
How to Convert Time Zones Without Getting It Wrong
How to convert time zones correctly, covering the offset method step by step, handling daylight saving and the date change, and the mistakes that cause errors.
UTC & GMT
UTC & GMT
UTC vs GMT: What's the Difference, Really?
UTC vs GMT explained in plain language, covering why they usually match, how atomic clocks and leap seconds separate them, and which term to use when.
UTC & GMT
Why Servers Use UTC (and Why You Should Too)
Why servers use UTC: how a single daylight-saving-free time standard keeps logs, databases, and distributed systems consistent, and why aviation relies on it too.