Surprisingly, I think the answer is YES. Actually, I seem to recall that our version would print calendars into the 21st century and beyond. I remember using the same calendar / day of week routines to do a computer programming assignment that calculated the date of Easter from the years 1500 to 2500. We did not use the built-in date functions of RSTS and Basic-Plus. I'll have to take a look at the code to verify this. Ashley