Dev - Time
ISO 8601
https://en.wikipedia.org/wiki/ISO_8601
RFC 3339
https://datatracker.ietf.org/doc/html/rfc3339
Differences
https://ijmacd.github.io/rfc3339-iso8601/
RFC 3339 is listed as a profile of ISO 8601. Most notably RFC 3339 specifies a complete representation of date and time (only fractional seconds are optional). The RFC also has some small, subtle differences. For example truncated representations of years with only two digits are not allowed — RFC 3339 requires 4-digit years, and the RFC only allows a period character to be used as the decimal point for fractional seconds. The RFC also allows the “T” to be replaced by a space (or other character), while the standard only allows it to be omitted (and only when there is agreement between all parties using the representation).