I plan to spend the weekend in exactly the same way. But in case you care to know:
 - 15 Sept is the start of the school year
 - 17 Sept is the Day of Sofia. In the Christian Orthodox calendar this is the day of Sophia (wisdom from Greek) and of her daughters Love, Hope and Faith. I am sure you've met a lot of ladies carrying this names (their Bulgarian versions) offering you treats because they have a name day
 - 6 Sept is the Day of Unification - sadly this year it was Sunday so we did not get a long weekend :-)
 - 22 Sept is the Day of Independence so it's a National Holiday but Monday (21st) is not and that's why next weekend would be one very short weekend of only one day - we would have to work on Saturday.

OK, back to my own book :-)