"Sun, 18 Aug 2024 23:16:16"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
23:16:16
General datetime
2024-08-18 23:16:16Z
For Database
2024-08-18 23:16:16
For HTTP1.1
Sun, 18 Aug 2024 23:16:16 GMT