I had an technical issue in solidworks, I approached many experts regarding this issue but couldnot get the solution. 

The issue is I want to pattern a hole all around the semi spherical surface, maintaining equal distances between the neighbouring holes. This should satisfy 2 conditions as mentioned below :

1) The holes should be tangential to the surface.

2) The distance between the neighbouring holes should be equal all over.

And this should also be programmable as such the hole size and number of holes can me manipulated in design table.

I tried my best to find the solution, I could achieve it in CATIA V5 but i failed to achieve it in solidworks. Can you please help me out with a solution.