Smith Chart and Impedance

[signo]

Hello to everybody.
In a Smith Chart I can see an impedance throught a point (the value of
the real part and the imaginary part are known).
If I wanted to find the phase of it I can do it analytically, just
doing the arc tangent of imag/real.
The question is: is it possible to see the phase directly on the Smith
Chart without any calculation?

Thank you very much.