Change an image every day in Flash

I work in a high school in England and I would really like to know how to make a simple flash file where I have one image for 12 July 2016 and then another image for 13 July 2016 and so on. Each image will be specific for that day, for example, 12 July could be Geography Exam Room B102 9.00am and for 13 July it could be Maths Exam Room C003 1.00pm etc. The images will be just simple ones done in Photoshop so each name would have to correspond some how to an Actionscript code.

Many thanks