"Sat, 21 Sep 2024 11:11:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
11:11:13
General datetime
2024-09-21 11:11:13Z
For Database
2024-09-21 11:11:13
For HTTP1.1
Sat, 21 Sep 2024 11:11:13 GMT