Convert between a UNIX timestamp to a date/time.
Any integer with 5 or more digits is interpreted as a timestamp. Meanwhile for date/times, there are several formats supported:
YYYY-MM-DDTHH:MM:SSZ (UTC)YYYY-MM-DDTHH:MM:SS (Local TZ)YYYY-MM-DD (Local TZ)HH:MM:SS (Local TZ)HH:MM (Local TZ)