2023 Supernatural Square Calendar. Each month displays quotes and images of the two brothers Dean Winchester and Sam Winchester along with other characters from this popular TV series. This wall calendar has a large monthly date panel where you can keep track of appointments, birthdays and make plenty of notes for 2023. Official Supernatural 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.