"Mon, 20 May 2024 17:59:02"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
17:59:02
General datetime
2024-05-20 17:59:02Z
For Database
2024-05-20 17:59:02
For HTTP1.1
Mon, 20 May 2024 17:59:02 GMT