"Mon, 15 Apr 2024 18:34:52"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240415
Only TIME
18:34:52
General datetime
2024-04-15 18:34:52Z
For Database
2024-04-15 18:34:52
For HTTP1.1
Mon, 15 Apr 2024 18:34:52 GMT