You're asking for a temperature conversion, but there's a missing piece of information: is 20° the temperature in Celsius or Fahrenheit?

Here's how to convert between the two:

* Celsius to Fahrenheit: (°C x 9/5) + 32 = °F

* Fahrenheit to Celsius: (°F - 32) x 5/9 = °C

Please tell me if 20° is Celsius or Fahrenheit, and I can give you the conversion!