The Equation Of Time T-Shirt | Umbravoid
The Equation Of Time T-Shirt | Umbravoid
Sundials and clocks rarely agree — and the gap between them, swinging up to about 16 minutes across the year, is the equation of time. Born from Earth's tilted axis and elliptical orbit, it's also what twists the Sun's yearly path into the graceful figure-eight of the analemma. 'The Equation of Time' is for the observer who delights in the clockwork of the solar system. A premium astronomy tee for the celestial-mechanics nerd. Available in 7 sizes (S–4XL) and 10 colorways.
- 100% soft ring spun U.S. cotton fabric & cotton threads
- Proud member of the U.S. Cotton Trust Protocol
- OEKO-TEX certified low-impact dyes
- Salt free clean pigment dye colors
- Plastic-free packaging — polybags removed on all colors except White
All of our shirts are shipped directly from the United States. Orders are processed within 1 to 2 business days and 4-6 days of delivery
- The standard shipping fee is $5.99
- All orders over $99 is free shipping
Organic Cotton
GOTS certified. Grown without pesticides. Soft, breathable, built to last decades.
Colorfastness
Water-based inks cured at 320°F. Wash after wash, the design stays as sharp as the night sky.
Peer Reviewed
Every design is verified against current astronomical data. Coordinates are real. Objects are real.
Made in USA
Produced in the United States. Shorter supply chain, lower footprint, faster delivery.