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xkcd #2846: Daylight Saving Choice
(imgs.xkcd.com)
Alt text:
I average out the spring and fall changes and just set my clocks 39 minutes ahead year-round.
Sure, but it's still true that businesses operate during hours similar to any other places in the world. Even in Spain, ~9 to ~14 then ~17 to ~20, the day time hours are still in the "rest of the world bracket".
Sure, but that still means you are not reaching someone by phone at work during 4 hours of you previously mentioned 8-17 Windows.
As someone currently working from Ireland with my usual office in Germany (laptop still configured this way) with a Team from India and DST ending next week, I would prefer to drop the calculations and just remember when each colleague approximately comes online. That is not the same for each colleague and day anyways.