You're asking to convert 20 degrees Celsius to Fahrenheit. Here's how to do that:

Formula:

* °F = (°C × 9/5) + 32

Calculation:

1. Multiply Celsius by 9/5: 20°C × 9/5 = 36

2. Add 32: 36 + 32 = 68

Therefore, 20 degrees Celsius is equal to 68 degrees Fahrenheit.