Labor Day in September 1882. In connection with this clandestine Knights assembly, a public parade of various labor organizations was held on September 5 under the auspices of the Central Labor Union (CLU) of New York. Secretary of the CLU Matthew Maguire is credited for first proposing that a national Labor Day holiday subsequently be held on the first Monday of each September in the aftermath of this successful public demonstration. An alternative thesis is maintained that the idea of Labor Day was the brainchild of Peter J. McGuire, a vice president of the American Federation of Labor, who put forward the
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