explain xkcd - User contributions [en]

Talk:2867: DateTime

2023-12-14T18:34:29Z

Gavin: Fixed indent.

Comics like this are why this wiki exists. [[Special:Contributions/172.70.100.172|172.70.100.172]] 23:30, 13 December 2023 (UTC)
:The time falsehoods gist linked above is a really good explanation about why a programmer might panic about calculating time. Especially the ones about calling "getCurrentTime()" twice in a row doesn't always mean the results are in the order you think they were called, or even different values. t2 might very well be the same or less than t1. It can be maddening. [[Special:Contributions/162.158.197.149|162.158.197.149]] 23:40, 13 December 2023 (UTC)
::The last item is the most important to me: ''Users prefer to use the local timezone.'' This causes so much frustration while browsing the web! [[File:PissedOff.gif]] --[[Special:Contributions/162.158.110.68|162.158.110.68]] 00:26, 14 December 2023 (UTC)
::Worth noting that events can take place over long periods. A sunspot or an illness or a relationship doesn't happen at a single point in time, it takes place over days or weeks or longer. When did it "start"? Who knows? Also I miss calling TI4-1212 here in DC. [[Special:Contributions/172.70.175.27|172.70.175.27]] 01:39, 14 December 2023 (UTC)
::Out of curiosity, could someone explain the item in that time falsehoods list that says "Months have either 28, 29, 30, or 31 days"? My guess is that it's a reference to their being more calendars in the world than Gregorian? But I'm not sure if there's more than that going on, there.[[User:ModelD|ModelD]] ([[User talk:ModelD|talk]]) 18:18, 14 December 2023 (UTC)
:::Isn't that true of Gregorian calendars? February has 28 or 29 depending on the year, AJSN have 30 and JMMJAOD have 31.[[User:Gavin|Gavin]] ([[User talk:Gavin|talk]]) 18:33, 14 December 2023 (UTC)

Related insanity on Computerphile with Tom Scott: https://m.youtube.com/watch?v=-5wpm-gesOY [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 03:54, 14 December 2023 (UTC)

Even with just Special Relativity, the question doesn't really make sense, because the answer will depend on the inertial reference frame. "Impossible to know and a sin to ask" is not a bad way to describe questions about non-invariants. [[Special:Contributions/162.158.154.189|162.158.154.189]] 08:09, 14 December 2023 (UTC)
:Is it even ''possible'' for two observers to agree on the answer and be sure that it's correct for both of them? [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 16:53, 14 December 2023 (UTC)

I can see Randall's point, so for your average everyday programming I'd say "please use a library function instead of trying to do it yourself, or you'll end up like the guy in the lower frame..." --[[User:IByte|IByte]] ([[User talk:IByte|talk]]) 11:02, 14 December 2023 (UTC)

Talk:2867: DateTime

2023-12-14T18:33:53Z

Gavin: Responding to comment about months having {28:31} days

Comics like this are why this wiki exists. [[Special:Contributions/172.70.100.172|172.70.100.172]] 23:30, 13 December 2023 (UTC)
:The time falsehoods gist linked above is a really good explanation about why a programmer might panic about calculating time. Especially the ones about calling "getCurrentTime()" twice in a row doesn't always mean the results are in the order you think they were called, or even different values. t2 might very well be the same or less than t1. It can be maddening. [[Special:Contributions/162.158.197.149|162.158.197.149]] 23:40, 13 December 2023 (UTC)
::The last item is the most important to me: ''Users prefer to use the local timezone.'' This causes so much frustration while browsing the web! [[File:PissedOff.gif]] --[[Special:Contributions/162.158.110.68|162.158.110.68]] 00:26, 14 December 2023 (UTC)
::Worth noting that events can take place over long periods. A sunspot or an illness or a relationship doesn't happen at a single point in time, it takes place over days or weeks or longer. When did it "start"? Who knows? Also I miss calling TI4-1212 here in DC. [[Special:Contributions/172.70.175.27|172.70.175.27]] 01:39, 14 December 2023 (UTC)
::Out of curiosity, could someone explain the item in that time falsehoods list that says "Months have either 28, 29, 30, or 31 days"? My guess is that it's a reference to their being more calendars in the world than Gregorian? But I'm not sure if there's more than that going on, there.[[User:ModelD|ModelD]] ([[User talk:ModelD|talk]]) 18:18, 14 December 2023 (UTC)
::Isn't that true of Gregorian calendars? February has 28 or 29 depending on the year, AJSN have 30 and JMMJAOD have 31.[[User:Gavin|Gavin]] ([[User talk:Gavin|talk]]) 18:33, 14 December 2023 (UTC)

Related insanity on Computerphile with Tom Scott: https://m.youtube.com/watch?v=-5wpm-gesOY [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 03:54, 14 December 2023 (UTC)

Even with just Special Relativity, the question doesn't really make sense, because the answer will depend on the inertial reference frame. "Impossible to know and a sin to ask" is not a bad way to describe questions about non-invariants. [[Special:Contributions/162.158.154.189|162.158.154.189]] 08:09, 14 December 2023 (UTC)
:Is it even ''possible'' for two observers to agree on the answer and be sure that it's correct for both of them? [[User:BunsenH|BunsenH]] ([[User talk:BunsenH|talk]]) 16:53, 14 December 2023 (UTC)

I can see Randall's point, so for your average everyday programming I'd say "please use a library function instead of trying to do it yourself, or you'll end up like the guy in the lower frame..." --[[User:IByte|IByte]] ([[User talk:IByte|talk]]) 11:02, 14 December 2023 (UTC)