"Sun, 18 Aug 2024 18:20:08"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
18:20:08
General datetime
2024-08-18 18:20:08Z
For Database
2024-08-18 18:20:08
For HTTP1.1
Sun, 18 Aug 2024 18:20:08 GMT