On the course I went on the guy had us working it out in weeks, whereas all the court documents I've got give the ban's length in months.
Other people here seem pretty sure about the end date of their bans so maybe it's just me not paying attention, but I only know within a week or so when my ban comes to an end. It's either the 1st, 5th or 6th June in my case. I was convicted on 5th May 2010 and the ban was 17 months, reduced to 13 months with the course.
I've had conflicting information suggesting the three dates I've just said as being my "back behind the wheel" day. When we worked it out during the course it came out as three weeks earlier - if anyone can help me out with a definitive date I'd be grateful!
Really though, for the few days difference it would make is it worth putting yourself through the stress of even trying to find out if you can appeal?