Blog

Articles on time zones, daylight saving time, UTC, and the history of timekeeping.

Explainer·7 min read

How Daylight Saving Time Works

Why clocks change twice a year, which countries still do it, and how to handle the transitions without confusion.

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Explainer·6 min read

UTC and GMT Explained

The difference between UTC and GMT, why it matters for software and travel, and how UTC offsets work.

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Practical·8 min read

How to Schedule Meetings Across Time Zones

A practical guide to finding overlap windows, avoiding DST traps, and communicating times unambiguously.

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Explainer·7 min read

What Is a Time Zone?

A complete explanation of how time zones are defined, why they follow political borders, and how the IANA database works.

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History·8 min read

Why Countries Have Different Time Zones

The history behind how the world carved itself into time zones — from railroads to the International Meridian Conference.

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History·9 min read

The History of Standard Time

How humanity went from local sun time to a globally agreed system, and the political battles fought along the way.

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Developer·10 min read

Time Zones for Developers

The most common time zone mistakes in software — storing UTC, handling DST gaps, and displaying local time correctly.

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Explainer·6 min read

Daylight Saving Time Around the World

Which regions observe DST, which abolished it, and why the switch dates differ between countries.

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