"Mon, 13 May 2024 19:59:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
19:59:16
General datetime
2024-05-13 19:59:16Z
For Database
2024-05-13 19:59:16
For HTTP1.1
Mon, 13 May 2024 19:59:16 GMT