"Sun, 15 Sep 2024 13:33:33"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
13:33:33
General datetime
2024-09-15 13:33:33Z
For Database
2024-09-15 13:33:33
For HTTP1.1
Sun, 15 Sep 2024 13:33:33 GMT