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IANA Time Zone Database: The Hidden History in Your Code

Hacker News •
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The IANA Time Zone Database might seem like a dry technical resource, but it's actually a treasure trove of human history and whimsy. When British Columbia announced plans to adopt permanent daylight time, I wondered if this change had made it into the database yet. Thanks to GitHub, we can now track these updates as commits and discover the fascinating stories behind them.

What makes this database remarkable isn't just its technical importance—it's relied upon by countless software systems worldwide—but the personality it reveals. During World War II, Britain even adopted 'double summer time,' adding two hours to the clock in summer months. The database meticulously documents these changes, but it also contains delightful surprises. In the North America file alone, you'll find Robertson Davies' 1947 scathing critique of daylight saving time, comparing it to 'the bony, blue-fingered hand of Puritanism.'

There are also stories like Nashville's public clock with 'dueling faces' for conservatives and liberals, New York City's 'day of two noons' in 1883 when standardized time zones were adopted, and a detective story about time zones in Resolute Bay above the Arctic Circle. Time zones may be maddening to deal with, but the database that records them shows that behind every technical standard lies a charmingly human story.