"Mon, 26 Feb 2024 20:15:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240226
Only TIME
20:15:16
General datetime
2024-02-26 20:15:16Z
For Database
2024-02-26 20:15:16
For HTTP1.1
Mon, 26 Feb 2024 20:15:16 GMT