"Sun, 18 Aug 2024 21:31:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
21:31:08
General datetime
2024-08-18 21:31:08Z
For Database
2024-08-18 21:31:08
For HTTP1.1
Sun, 18 Aug 2024 21:31:08 GMT