"Wed, 21 Feb 2024 20:15:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240221
Only TIME
20:15:48
General datetime
2024-02-21 20:15:48Z
For Database
2024-02-21 20:15:48
For HTTP1.1
Wed, 21 Feb 2024 20:15:48 GMT