"Mon, 15 Apr 2024 20:14:38"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240415
Only TIME
20:14:38
General datetime
2024-04-15 20:14:38Z
For Database
2024-04-15 20:14:38
For HTTP1.1
Mon, 15 Apr 2024 20:14:38 GMT