"Sat, 21 Sep 2024 21:31:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
21:31:13
General datetime
2024-09-21 21:31:13Z
For Database
2024-09-21 21:31:13
For HTTP1.1
Sat, 21 Sep 2024 21:31:13 GMT