"Mon, 13 May 2024 08:37:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
08:37:20
General datetime
2024-05-13 08:37:20Z
For Database
2024-05-13 08:37:20
For HTTP1.1
Mon, 13 May 2024 08:37:20 GMT