"Mon, 13 May 2024 08:37:15"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
08:37:15
General datetime
2024-05-13 08:37:15Z
For Database
2024-05-13 08:37:15
For HTTP1.1
Mon, 13 May 2024 08:37:15 GMT