Part 1 is an encyclopaedic index of words, phrases and terms concerned with time: it has entries on topics such as Blue Moon, Groundhog Day and Oatmeal Monday, and discussions on others such as Time Zones and the Zodiac.
Part 2 takes the 366 days of the Gregorian leap year one by one and looks at observances, holidays and how they relate to other calendars.
Part 3 discusses a number of different types of calendars, including Fijian, French Revolutionary, Gregorian, Jewish, Muslim and Roman.
