"Sat, 21 Sep 2024 03:40:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
03:40:31
General datetime
2024-09-21 03:40:31Z
For Database
2024-09-21 03:40:31
For HTTP1.1
Sat, 21 Sep 2024 03:40:31 GMT