ISO8601 is the best format and the international standard to denote date and time.
2023-11-21T00:34:2
How do you decide what the second will be, when you start writing it or when you finish?
I’m not sure I would agree with that. ISO-8601 is ambiguous, and very difficult to parse. For example, here are a couple valid ISO-8601 strings. Could you let me know what they mean?
P1DT1H
R10/2021-208/P1Y
T22.3+0800
22,3
2021-W30-2
2021-W30-2T22+08
P1Y
20
Taken from here. My favorite is the last one (20
). If someone just wrote 20
and told you to parse it using ISO-8601, what would you get? Hour? It could even be century (ie. 2023%100
)!!
So I would argue that ISO-8601 is just a wee bit too flexible. Personally, I like RFC 3339 just a bit more…
Edit: that said, I would definitely agree that something along the lines of 2021-07-27T14:20:32Z
is better than any regularly accepted alternative, and I pretty much format my dates that way all the time.
- A period of one day and one hour.
- A period of one year, ten times, from the 208th day of 2021.
- Ten hours and 18 minutes pm (I’m not sure about this one) on UTC+08:00 (China, for example).
- IDK.
- The 2nd day of the 30th week of 2021.
- Same as above, but at 22:00 in China, probably.
- A period of one year.
- IDK.