Orange Circle Studio 16-Month 2015 Wall Calendar, Glow-in-the-Dark Constellations (51152) Orange Circle 2015 Wall Calendar, Glow-in-the-Dark Constellations; calendar measures 12 x 24 inches when opened Take stargazing to exciting new heights without a telescope with a fabulous glow-in-the-dark calendar featuring the 13 constellations of the zodiac 16-month wall calendar is printed on heavy Forest Stewardship Council-certified paper using soy-based inks Wall calendar pages are 100% recyclable Orange Circle invites you to explore their line of fresh, innovative calendars, organizers and planners available on Amazon