"Sat, 21 Sep 2024 08:08:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
08:08:18
General datetime
2024-09-21 08:08:18Z
For Database
2024-09-21 08:08:18
For HTTP1.1
Sat, 21 Sep 2024 08:08:18 GMT