"Mon, 15 Jul 2024 18:38:12"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240715
Only TIME
18:38:12
General datetime
2024-07-15 18:38:12Z
For Database
2024-07-15 18:38:12
For HTTP1.1
Mon, 15 Jul 2024 18:38:12 GMT