"Sun, 18 Aug 2024 14:47:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
14:47:13
General datetime
2024-08-18 14:47:13Z
For Database
2024-08-18 14:47:13
For HTTP1.1
Sun, 18 Aug 2024 14:47:13 GMT