Calendar Collecting T-Shirts

Express their passion for calendar collecting with a t-shirt that combines humor and style—perfect for everyday wear or casual outings.

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 Collecting T-Shirts Collection

Calendar Collecting Mugs

Explore our collection of mugs designed for calendar collectors—perfect for mornings, coffee breaks, or as a charming gift.

Calendar Collecting Pillows

Discover cozy pillows that reflect their passion for calendar collecting—great for adding personality to any space.

Calendar Collecting Prints

Browse our beautiful prints inspired by calendars—perfect for framing and showcasing their favorite months.