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Daylight saving creator left the chat.... (lemmy.world)

submitted 8 months ago by devilish666@lemmy.world to c/programmer_humor@programming.dev

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[-] corsicanguppy@lemmy.ca 25 points 8 months ago

I feel you're conflating TimeZones with ever-changing Daylight Savings time rules.

[-] arc@lemm.ee 10 points 8 months ago

True but so do most computers. Computers have a database of timezones and time offsets around the world. Depending on the UTC date and time, and your current timezone it will look up what offset to apply to show the local time. The database is very gnarly since rules change over time, e.g. maybe in the 70s some countries had longer DST to counteract oil shortages.