How Daylight Saving Time Works
Why clocks change twice a year, which countries still do it, and how to handle the transitions without confusion.
Read article →Articles on time zones, daylight saving time, UTC, and the history of timekeeping.
Why clocks change twice a year, which countries still do it, and how to handle the transitions without confusion.
Read article →The difference between UTC and GMT, why it matters for software and travel, and how UTC offsets work.
Read article →A practical guide to finding overlap windows, avoiding DST traps, and communicating times unambiguously.
Read article →A complete explanation of how time zones are defined, why they follow political borders, and how the IANA database works.
Read article →The history behind how the world carved itself into time zones — from railroads to the International Meridian Conference.
Read article →How humanity went from local sun time to a globally agreed system, and the political battles fought along the way.
Read article →The most common time zone mistakes in software — storing UTC, handling DST gaps, and displaying local time correctly.
Read article →Which regions observe DST, which abolished it, and why the switch dates differ between countries.
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