Simon Willison’s Weblog

20th March 2007 - Link Blog

A Zoned Defense. Using JavaScript’s date.getTimezoneOffset() to detect the user’s timezone and stash it in a cookie.

Posted 20th March 2007 at 9:51 am

Recent articles

Writing about Agentic Engineering Patterns - 23rd February 2026
Adding TILs, releases, museums, tools and research to my blog - 20th February 2026
Two new Showboat tools: Chartroom and datasette-showboat - 17th February 2026

This is a link post by Simon Willison, posted on 20th March 2007.

javascript 743 timezones 15

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