INTERNATIONAL DAY OF PEACE! 21 SEPTEMBER! Peace Bulletin Board Letters, Peace Quote, Peace Classroom Décor, Peace Sayings, Peace, Back To School The words read, INTERNATIONAL DAY OF PEACE! 21 SEPTEMBER! Size: 8.5 by 11 inch (letter paper) To print 2 or more letters on one page, please choose print multiple pages, option in your printer. Great for a quick bulletin board, door display and more.