Funny thing, in ISO 8601 date isn’t separated by colon. The format is “YYYY-MM-DDTHH:MM:SS+hh:mm”. Date is separated by “-”, time is separated by “:”, date and time are separated by “T” (which is the bit that a lot of people miss). Time zone indicator can also be just “Z” for UTC. Many of these can be omitted if dealing with lesser precision (e.g. HH:MM is a valid timestamp, YYYY-MM is a valid datestamp if referring to just a month). (OK so apparently if you really want to split hairs, timestamps are supposed to be THH:MM etc. Now that’s a thing I’ve never seen anyone use.) Separators can also be omitted though that’s apparently not recommended if quick human legibility is of concern. There’s also YYYY-Wxx for week numbers.
YYYY-MM-DD:HH:MM:SS
YYYY-MM-DD:HH:MM:SS+TZ
RFC3339! It’s like ISO8601, but good!
YYYY-MM-DDTHH:MM:SS.SSSSSSSSSZ
I love the nanosecond format! I was playing with the date command earlier and came across this.
This, but all run together.
I write files/reports to disk a lot from scripts, so that’s my preferred format.
I just go for a unix timestamp and use terminal/filemanager to sort by or display the datetime
Are you talking epoch? I don’t care for that mainly because it’s not human readable. I see the use for it, but I struggle with it in practical use.
Yep. I mostly like datetimes for simple sorting. If it needs to be human readable iso is the way to go tho.
Funny thing, in ISO 8601 date isn’t separated by colon. The format is “YYYY-MM-DDTHH:MM:SS+hh:mm”. Date is separated by “-”, time is separated by “:”, date and time are separated by “T” (which is the bit that a lot of people miss). Time zone indicator can also be just “Z” for UTC. Many of these can be omitted if dealing with lesser precision (e.g. HH:MM is a valid timestamp, YYYY-MM is a valid datestamp if referring to just a month). (OK so apparently if you really want to split hairs, timestamps are supposed to be THH:MM etc. Now that’s a thing I’ve never seen anyone use.) Separators can also be omitted though that’s apparently not recommended if quick human legibility is of concern. There’s also YYYY-Wxx for week numbers.