"Sat, 21 Sep 2024 21:11:43"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
21:11:43
General datetime
2024-09-21 21:11:43Z
For Database
2024-09-21 21:11:43
For HTTP1.1
Sat, 21 Sep 2024 21:11:43 GMT