"Sun, 18 Aug 2024 19:39:17"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
19:39:17
General datetime
2024-08-18 19:39:17Z
For Database
2024-08-18 19:39:17
For HTTP1.1
Sun, 18 Aug 2024 19:39:17 GMT