"Sun, 18 Aug 2024 18:48:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
18:48:48
General datetime
2024-08-18 18:48:48Z
For Database
2024-08-18 18:48:48
For HTTP1.1
Sun, 18 Aug 2024 18:48:48 GMT