"Mon, 20 May 2024 13:01:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
13:01:35
General datetime
2024-05-20 13:01:35Z
For Database
2024-05-20 13:01:35
For HTTP1.1
Mon, 20 May 2024 13:01:35 GMT