Back to school (marketing) which is unusual in that it starts its school year in spring, the back to school sales are traditionally held in late March. In Canada and the United States, back to school shopping is associated with Labor Day, which falls on the first Monday of September. While Labor Day is a widely-observed holiday, it has no official celebration. Labor Day has since become symbolic as the unofficial "end of summer". Most schools and colleges begin their school year around this time, so the holiday has become a back to school shopping tradition. much as Memorial Day and Victoria Day, and
Determination of the day of the week for the following month. The item for January is "0"; for February or March, "3"; for December, "12". Day-item: The total, thus reached, must be corrected, by deducting "1" (first adding 7, if the total be "0"), if the date be January or February in a leap year, remembering that every year, divisible by 4, is a Leap Year, excepting only the century-years, in `New Style', when the number of centuries is not so divisible (e.g. 1800). The final result gives the day of the week, "0" meaning Sunday, "1" Monday, and so on. Examples: 17, divided by 4, leaves