"Sat, 21 Sep 2024 17:44:18"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
17:44:18
General datetime
2024-09-21 17:44:18Z
For Database
2024-09-21 17:44:18
For HTTP1.1
Sat, 21 Sep 2024 17:44:18 GMT