Tell HN: Sudden Chile daylight savings time rules change causes chaos

Post by nisegami » Tue, Sep 13, 2022, 1:17 PM UTC

MobiusHorizons wrote: post #22

spiffytech wrote: post #20

This kind of thing is why it's important to store user-specified future dates as local time + IANA zone name. If a user wants a calendar event at 9am, they probably still mean 9am after accounting for time zone or DST changes. Storing dates as UTC is appropriate for dates in the past, or future dates that a user will never expect to happen at a certain wall-clock time. (An IANA zone name is something like America/New…

It’s one heuristic, but you can’t know what they want, the problem is underspecified. It’s reasonably likely they could want a reminder to watch a game that is being broadcast from a different time zone, or call a friend in a different country.

Post by elashri » Thu, Sep 15, 2022, 11:34 PM UTC

rrrrrrrrrrrryan wrote: post #108

elashri wrote: post #89

Earlier quoted context omitted.

Why would they change for Ramadan? the fasting times are determined by sun rise and set. It is not going to change and prayer times wouldn't be affected ( except the numerical shift of time only). The second part about arab world are not correct through. I grew up in Egypt which used to have daylight saving change but this ceased to happen from 2011 I think.

Looks like fasting in public during Ramadan is mandated by law in Morocco from 9am - 3pm. Rather than change this law, they changed the clocks during Ramadan so people could legally eat an hour earlier in the evening.