"Mon, 20 May 2024 23:19:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
23:19:08
General datetime
2024-05-20 23:19:08Z
For Database
2024-05-20 23:19:08
For HTTP1.1
Mon, 20 May 2024 23:19:08 GMT