2023 Attack on Titan Square Calendar. This Calendar is based on Japanese manga series Attack on Titan featuring all your favourite characters. There is also plenty of room for all your notes and appointments in the large monthly date panels provided. Product Dimensions: 305 X 305 MM Official Attack On Titan Product Danilo is the leading publisher of officially licensed calendars, diaries, greeting cards, gift wrap and gift bags in the UK. We are a family run company that’s been operating for more than 40 years. Our licenses range from baby to adult. All the paper we use is responsibly sourced and we only work with suppliers and manufacturers that meet our stringent ethical requirements.