Boston Terriers 2015 Wall Calendar (18 Month Calendar) Boston Terriers wall calendar for 2015. Featuring beautiful photography, this wall calendar offers a terrific sampling of this popular breed. 18 month calendar; July 2014 through December 2015. Measures 12 X 12 inches closed, 24 X 12 inches opened. Monthly grids are large enough to record daily tasks and appointments. Includes major holidays and moon phases. Free DogDays App included. Perfect for anyone who loves Boston Terriers!