23.08.2018 Rauma attends national Cleaning Day 25.8. Cleaning Day is a new day of celebration for friends of flea markets and recycling. Next Cleaning Day is on Saturday 26th of May 2018. The neatest festival of the year changes cities and neighborhoods into huge flea markets and marketplaces. Anyone can offer their second hand items up for sale on the streets, yards and at home, as well as make the best finds of the day.