"Sat, 21 Sep 2024 14:21:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
14:21:14
General datetime
2024-09-21 14:21:14Z
For Database
2024-09-21 14:21:14
For HTTP1.1
Sat, 21 Sep 2024 14:21:14 GMT