"Mon, 13 May 2024 18:42:37"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
18:42:37
General datetime
2024-05-13 18:42:37Z
For Database
2024-05-13 18:42:37
For HTTP1.1
Mon, 13 May 2024 18:42:37 GMT