"Sun, 18 Aug 2024 13:37:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
13:37:13
General datetime
2024-08-18 13:37:13Z
For Database
2024-08-18 13:37:13
For HTTP1.1
Sun, 18 Aug 2024 13:37:13 GMT