"Mon, 20 May 2024 17:58:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
17:58:56
General datetime
2024-05-20 17:58:56Z
For Database
2024-05-20 17:58:56
For HTTP1.1
Mon, 20 May 2024 17:58:56 GMT