"Sat, 21 Sep 2024 23:56:23"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
23:56:23
General datetime
2024-09-21 23:56:23Z
For Database
2024-09-21 23:56:23
For HTTP1.1
Sat, 21 Sep 2024 23:56:23 GMT