What is the different between -17 degree fahranit and 4 degree fahranit?

The difference between -17 degrees Fahrenheit and 4 degrees Fahrenheit is 21 degrees. This is calculated by subtracting -17 from 4: 4 - (-17) = 4 + 17 = 21. Therefore, 4 degrees Fahrenheit is significantly warmer than -17 degrees Fahrenheit.