"Sun, 18 Aug 2024 20:02:13"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
20:02:13
General datetime
2024-08-18 20:02:13Z
For Database
2024-08-18 20:02:13
For HTTP1.1
Sun, 18 Aug 2024 20:02:13 GMT