"Sat, 21 Sep 2024 02:15:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
02:15:38
General datetime
2024-09-21 02:15:38Z
For Database
2024-09-21 02:15:38
For HTTP1.1
Sat, 21 Sep 2024 02:15:38 GMT