4 October is celebrated as a cinnamon bun day in Sweden. Although not everyone eats cinnamon bun on this day, many people give cinnamon bun to their family and friends.
According to Wikipedia, the cinnamon bun day is the day to appreciate the ‘bun’ in Sweden, especially cinnamon bun, as well as to increase the sales of yeast, flour, sugar, and butter.
My colleagues and I did eat cinnamon bun during our afternoon tea at work. We wanted to celebrate this special day at work.