context1: The new moon would fall on that day during that year of the cycle. For example, in the 18th year of the cycle, the new moons would fall on all the <strong>dates</strong> marked with Tvimadur, the symbol for year 18. Later <strong>calendars</strong> used Pentadic numerals for the values 1–19.
context2: For example, many college football teams routinely ended their seasons with rivalry games on Thanksgiving, and had scheduled them that year for the last day in November; some athletic conferences had rules permitting games only through the Saturday following Thanksgiving. If the <strong>date</strong> were changed, many of these teams would play their games for empty stadiums or not at all. The change also caused problems for college registrars, schedulers, and <strong>calendar</strong> makers.