"Sun, 18 Aug 2024 12:15:56"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240818
Only TIME
12:15:56
General datetime
2024-08-18 12:15:56Z
For Database
2024-08-18 12:15:56
For HTTP1.1
Sun, 18 Aug 2024 12:15:56 GMT