rational basis for a calendar upon

Rick Hull · Rick Hull · commit d8863cf377fa · 2025-06-04T15:47:31.000-04:00
diff --git a/RationalPrimeCalendar.md b/RationalPrimeCalendar.md
@@ -1,6 +1,6 @@
 # Rational Prime Calendar
 
-*A rational basis for a calendar based on 61 day periods*
+*A rational basis for a calendar upon 61 day periods*
 
 The Gregorian calendar is a 400-year-old hack job.
 February's weird.
