Calendar Devotee T-Shirts

Show off their passion for organization and planning with a fun, calendar-themed t-shirt—great for casual days and adding personality to any wardrobe.

Sadie, I just heard something disturbing, and I think you're the only one who can tell me whether it's true. Youtube is telling me we've lived 300 years of phantom time. Pope Gregory XIII's math was off when he created our calendar, and this is actually the year 1717. What's more, the "Middle Ages" is just a fiction the pope created to explain his rounding error. You were there, Sadie ... Did King Arthur really exist? I'll tell you all about that nice boy, as soon as I demonstrate how we dealt w
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Sadie, I just heard something disturbing, and I think you're the only one who can tell me whether it's true. Youtube is telling me we've lived 300 years of phantom time. Pope Gregory XIII's math was off when he created our calendar, and this is actually the year 1717. What's more, the "Middle Ages" is just a fiction the pope created to explain his rounding error. You were there, Sadie ... Did King Arthur really exist? I'll tell you all about that nice boy, as soon as I demonstrate how we dealt w

from $29.00

Calendar Devotee T-Shirts Collection

Calendar Devotee Mugs

Explore our collection of mugs designed for calendar enthusiasts—perfect for morning routines and brightening up any desk or kitchen.

Calendar Devotee Pillows

Check out our cozy pillows featuring calendar-inspired designs—great for adding a personal touch to any room.

Calendar Devotee Prints

Discover artistic prints that showcase calendar themes—perfect for decorating their favorite space with their passion.