"Mon, 04 Mar 2024 20:15:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240304
Only TIME
20:15:39
General datetime
2024-03-04 20:15:39Z
For Database
2024-03-04 20:15:39
For HTTP1.1
Mon, 04 Mar 2024 20:15:39 GMT