xxxxxxxxxx
YYYY-MM-DD'T'hh:mm:ss'Z'
Z is the ofset from the UTC timezone
it can be replaced with "(+/-)hh:mm"
if ofset is not specified, character 'Z' is in place instead
2021-01-01T01:01:01+01:00
2021-02-02T02:02:42.069-02:00
2021-03-03T03:03:03.3Z
20210404T040404Z
xxxxxxxxxx
import datetime
datetime.datetime.now().isoformat()
>>> 2020-03-20T14:28:23.382748