"Mon, 20 May 2024 09:08:36"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240520
Only TIME
09:08:36
General datetime
2024-05-20 09:08:36Z
For Database
2024-05-20 09:08:36
For HTTP1.1
Mon, 20 May 2024 09:08:36 GMT