I like to have my Calendar showing a full calendar month.

However, lately it's started showing duplicate dates on the planner. I'm
looking at it just now and in the top it says: April 2006 (April 2006) and
in each of the boxes (for each day), it has the date in both the top left and
top right hand sides.

It does this intermittently so it's obviously something I'm doing, but I'm
not sure how to change it back. It's annoying because it looks so cluttered.

Thanks.