I have the following table set up on sheet2
Periods Start End
1 1-Apr-06 20-Apr-06
2 21-Apr-06 18-May-06
3 19-May-06 15-Jun-06
etc.

On sheet 1, when the date is entered in Column A, I want a function in
Column B to show what financial period that date would be in.

i.e.
A B
05-10-2006 2