"Sat, 21 Sep 2024 15:18:31"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
15:18:31
General datetime
2024-09-21 15:18:31Z
For Database
2024-09-21 15:18:31
For HTTP1.1
Sat, 21 Sep 2024 15:18:31 GMT