"Mon, 04 Mar 2024 20:15:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240304
Only TIME
20:15:38
General datetime
2024-03-04 20:15:38Z
For Database
2024-03-04 20:15:38
For HTTP1.1
Mon, 04 Mar 2024 20:15:38 GMT