"Mon, 20 May 2024 18:24:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
18:24:08
General datetime
2024-05-20 18:24:08Z
For Database
2024-05-20 18:24:08
For HTTP1.1
Mon, 20 May 2024 18:24:08 GMT