Hacker News new | ask | show | jobs
by dotancohen 1702 days ago
If you carry the string '2021-10-24' across countries borders, the moments in time that it represents change as well.

That makes doesn't make it a bad time interchange format for certain use cases, though. Just like everything else with time, one must be aware of caveats. Those include timezones, leap periods, culture, DST, formats, legislation (modern and ancient), etc.
1 comments
remram 1702 days ago
But it overlaps. It's off, but less than 100% off.

"2021-Q1" can be a completely different and non-overlapping range between regions, and even between companies in the same region.

link
naniwaduni 1702 days ago
2021-10-24 in UTC+14 (Line Islands) and UTC-10 (Hawaii) are, in fact, 100% off.
link
remram 1701 days ago
Yeah the Line Islands are the exception as always.
link
naniwaduni 1701 days ago
We could've gone with most of New Zealand (UTC+13 summer time) and any of the US territories in UTC-11. These are marginal cases, not exceptional ones.
link
remram 1700 days ago
Fine, they overlap with the UTC day. They are less than 100% compared to the UTC day, even if they can be 100% off with each other.
link