"Mon, 20 May 2024 08:00:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
08:00:20
General datetime
2024-05-20 08:00:20Z
For Database
2024-05-20 08:00:20
For HTTP1.1
Mon, 20 May 2024 08:00:20 GMT