The 14-day mission to the International Space Station will deliver the Alpha Magnetic Spectrometer and spare parts that include two S-band communications antennas, a high-pressure gas tank, additional spare parts for the Dextre robot and micrometeoroid debris shields.
The First Labor Day. The first Labor Day holiday was celebrated on Tuesday, September 5, 1882, in New York City, in accordance with the plans of the Central Labor Union. The Central Labor Union held its second Labor Day holiday just a year later, on September 5, 1883.
In the United States and Canada, however, the official holiday for workers is Labor Day in September. After the Haymarket Square riot in May, 1886, US President Grover Cleveland feared that commemorating Labor Day on May 1 could become an opportunity to commemorate the riots.