I tried this solution as it quicker to implement and it worked.
I am a little confused by these references (ByRef), and the mention
of "global private control" variables as I am fairly new to VBA.
I will play with them on the weekend as it will hopefully clarify my
understanding of VBA variables. I always default my calendars (on
initialize) to today or the value (if prev. entered), however I
never thought to include a "today" button on the form. Thanks, that
makes perfect sense. I mentioned it to my test users  and they love
it, and they also want a Yesterday button :)