"Fri, 21 Jun 2024 14:09:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240621
Only TIME
14:09:02
General datetime
2024-06-21 14:09:02Z
For Database
2024-06-21 14:09:02
For HTTP1.1
Fri, 21 Jun 2024 14:09:02 GMT