Limerick (12+144+20 + 3 4**(1/2))/7 + 5*11 = 9**2 + 0 A dozen, a gross, and a score, Plus three times the square root of four, Divided by seven Plus five times eleven Is nine squared and naught a bit more. I'm trying to relate this limerick to calendrics. The first sum works out to 182, which is half a year. Dividing by seven gives number of weeks in 1/2 year. I'm not yet sure what to do about the rest. Anyway, thinking about this has got me starting to think of a calendar related item for as many integers as possible, along these lines: 2:Number of days in a weekend 4:Number of quarters in a year 5:Number of days in a work week 7:Number of days in a week 12:Number of months in Julian/Gregorian calendar 13:Number of months in calendar with 28 day months 14:Two weeks 28:Number of days in month of 13 month calendar 28:Number of days in February 29:Number of days in February during a leap year 365:Length of Gregorian year during non-leap years etc. The goal is to have something for as many numbers as possible. If you'd like to add entries yourself, feel free to upload an amended version of this file.