"Mon, 23 Sep 2024 21:40:40"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240923
Only TIME
21:40:40
General datetime
2024-09-23 21:40:40Z
For Database
2024-09-23 21:40:40
For HTTP1.1
Mon, 23 Sep 2024 21:40:40 GMT