"Sun, 18 Aug 2024 14:12:20"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
14:12:20
General datetime
2024-08-18 14:12:20Z
For Database
2024-08-18 14:12:20
For HTTP1.1
Sun, 18 Aug 2024 14:12:20 GMT