"Mon, 15 Apr 2024 20:14:19"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240415
Only TIME
20:14:19
General datetime
2024-04-15 20:14:19Z
For Database
2024-04-15 20:14:19
For HTTP1.1
Mon, 15 Apr 2024 20:14:19 GMT