On the perils of storing data in UTC:
https://codeblog.jonskeet.uk/2019/03/27/storing-utc-is-not-a-silver-bullet/
(Users expect future events to happen at the time specified, even if the timezone changes its policy on summer time transitions!)
miniblog.
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Today I learnt that you can do music lessons over Skype! This seems like a brilliant way of connecting students and teachers without needing to be in the same location/country/timezone.