"Mon, 19 Aug 2024 21:49:11"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240819
Only TIME
21:49:11
General datetime
2024-08-19 21:49:11Z
For Database
2024-08-19 21:49:11
For HTTP1.1
Mon, 19 Aug 2024 21:49:11 GMT