"Mon, 13 May 2024 21:03:51"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240513
Only TIME
21:03:51
General datetime
2024-05-13 21:03:51Z
For Database
2024-05-13 21:03:51
For HTTP1.1
Mon, 13 May 2024 21:03:51 GMT