"Mon, 15 Jul 2024 18:40:35"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240715
Only TIME
18:40:35
General datetime
2024-07-15 18:40:35Z
For Database
2024-07-15 18:40:35
For HTTP1.1
Mon, 15 Jul 2024 18:40:35 GMT