"Sun, 15 Sep 2024 20:02:14"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
20:02:14
General datetime
2024-09-15 20:02:14Z
For Database
2024-09-15 20:02:14
For HTTP1.1
Sun, 15 Sep 2024 20:02:14 GMT