"Thu, 29 Feb 2024 20:16:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240229
Only TIME
20:16:12
General datetime
2024-02-29 20:16:12Z
For Database
2024-02-29 20:16:12
For HTTP1.1
Thu, 29 Feb 2024 20:16:12 GMT