"Mon, 20 May 2024 13:31:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
13:31:40
General datetime
2024-05-20 13:31:40Z
For Database
2024-05-20 13:31:40
For HTTP1.1
Mon, 20 May 2024 13:31:40 GMT