"Mon, 15 Apr 2024 20:20:34"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240415
Only TIME
20:20:34
General datetime
2024-04-15 20:20:34Z
For Database
2024-04-15 20:20:34
For HTTP1.1
Mon, 15 Apr 2024 20:20:34 GMT