"Sat, 21 Sep 2024 14:12:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240921
Only TIME
14:12:39
General datetime
2024-09-21 14:12:39Z
For Database
2024-09-21 14:12:39
For HTTP1.1
Sat, 21 Sep 2024 14:12:39 GMT