"Sun, 15 Sep 2024 18:54:33"
Convert date and time to unixtime.
Another datetime format string at UTC
YYYYMMDD
20240915
Only TIME
18:54:33
General datetime
2024-09-15 18:54:33Z
For Database
2024-09-15 18:54:33
For HTTP1.1
Sun, 15 Sep 2024 18:54:33 GMT