Labor Day affair, which occurred in Chicago on May 4, 1886.) Lastly, several countries have chosen neither date for their Labour Day. Beginning in the late 19th century, as the trade union and labor movements grew, different groups of trade unionists chose a variety of days on which to celebrate labor. In the United States, a September holiday called Labor Day was first proposed in the early 1880s. Alternate stories of the event's origination exist. According to one early history of Labor Day, the event originated in connection with a General Assembly of the Knights of Labor convened in New York City
Determination of the day of the week Determination of the day of the week The determination of the day of the week for any date may be performed with a variety of algorithms. In addition, perpetual calendars require no calculation by the user, and are essentially lookup tables. A typical application is to calculate the day of the week on which someone was born or a specific event occurred. In numerical calculation, the days of the week are represented as weekday numbers. If Monday is the first day of the week, the days may be coded 1 to 7, for Monday through Sunday, as is practiced in