"Mon, 15 Apr 2024 08:54:04"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240415
Only TIME
08:54:04
General datetime
2024-04-15 08:54:04Z
For Database
2024-04-15 08:54:04
For HTTP1.1
Mon, 15 Apr 2024 08:54:04 GMT