"Mon, 19 Aug 2024 23:45:45"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240819
Only TIME
23:45:45
General datetime
2024-08-19 23:45:45Z
For Database
2024-08-19 23:45:45
For HTTP1.1
Mon, 19 Aug 2024 23:45:45 GMT