160765

I worked this out by first finding January. This had to have 31 days and start on a Monday. Next I had to find February which was easy as it was the only one with 28 days. I had to make sure that if January ended on a Friday , February would have to Start on Saturday to make sure the dates line up. I wrote down all the months and how many days there were in each month. This helped a lot. For every month you looked at , the end date would always be the day before the next one started.