On 2021-09-02 08:40, Alan Gauld via Python-list wrote:
On 31/08/2021 23:31, Chris Angelico wrote:Ah, good to know. I think that actually makes a lot of sense; in the US, they try to let everyone pretend that the rest of the world doesn't exist ("we always change at 2AM"), but in Europe, they try to synchronize for the convenience of commerce ("everyone changes at 1AM UTC").There's another gotcha with DST changes. The EU and USA have different dates on which they change to DST. In one of them (I can't recall which is which) they change on the 4th weekend of October/March in the other they change on the last weekend. That means on some years (when there are 5 weekends) there is a week when one has changed and the other hasn't. That caused us a lot of head scratching the first time we encountered it because our service centres in the US and EU were getting inconsistent time reporting and some updates showing as having happened in the future!
In the EU (and UK) it's the last Sunday in March/October. In the US it's second Sunday in March and the first Sunday in November. I know which one I find easier to remember! -- https://mail.python.org/mailman/listinfo/python-list
