"Thu, 15 Feb 2024 20:15:39"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240215
Only TIME
20:15:39
General datetime
2024-02-15 20:15:39Z
For Database
2024-02-15 20:15:39
For HTTP1.1
Thu, 15 Feb 2024 20:15:39 GMT