A long while ago my friend and I released a Safari extension that shows a few clocks in the timezones that you choose. I can't recall the details, but we had an

A long while ago my friend and I released a Safari extension that shows a few clocks in the timezones that you choose. I can't recall the details, but we had an off by 1 error on a few zones during DST. I ended up fixing it by hand changing the time, releasing a version every 6 months for years, otherwise we would get mails about it from the few users using it. I think I could automate this or otherwise solve the issue, but it always felt nice to move the clocks of a few hundred people.