Ever wonder why we all throw out calendars every year and go buy new ones?

You're not alone! The idea of a calendar that never changes has been around for over a century. Just like flowers that come back every year these calendars are called "perennial" calendars.

Infinity Calendar brings the ease and simplicity of the best perennial calendar system to your fingertips:
- Dates stay the same every year
- Every year month and week starts on Monday
- Every month is exactly 4 or 5 weeks long

One of the best features of Infinity Calendar is that dates don't need numbers. Everything is evenly divisible by weeks so you can just say "Third Thursday of June" and it always refers to the same day every year.

Infinity Calendar is based on the "Symmetry 454" calendar arithmetic calendar arithmetic openly documented royalty-free by Dr. Irv Bromberg of University of Toronto published online circa 2004. Learn more at http://individual.utoronto.ca/kalendis/symmetry.htm