"Sun, 15 Sep 2024 21:20:48"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
21:20:48
General datetime
2024-09-15 21:20:48Z
For Database
2024-09-15 21:20:48
For HTTP1.1
Sun, 15 Sep 2024 21:20:48 GMT