Water reflection - Skydome

Hey!

How do I reflect the day/night cycle on the water surface when using sphere, hemisphere and a plane for the whole sky? see pic: http://oi58.tinypic.com/2vvm2p5.jpg

I can only find tutorials when using a cubemap/skybox and not a skydome.

I’m using OpenGL 3.3 and GLSL 3.30.

Thanks in advance!