Birds nest in our tree

My husband discovered this nest with beautiful eggs in our backyard. It was tough to get a good angle, so I just held out my camera and snapped a few til I got this shot.
It is right next to our Master Bedroom window and the trampoline outside. The momma bird gets scared when we come out, and flee's the scene. But she is pretty. We figured after looking online that she is a Northern Cardinal.

I wonder how long til her eggs hatch....