In 1886, May Day became known as International Workers' Day, a labour holiday celebrated worldwide. In 1894, the United States established Labour Day as a national holiday to recognize the contributions and achievements of workers. List of May 1, 2026, worldwide official public holidays, bank holidays, government holidays and national holidays. Updated nightly. International Workers' Day, also called Labour Day in some countries [1] and often referred to as May Day, [2][3] is a celebration of labourers and the working classes that is promoted by the international labour movement and occurs every year on 1 May, [4][5] or the first Monday in May. [6][7] New Year’s Day which is on January 1, marks the start of the year in the Gregorian calendar. Al Isra’a Wal Mi’raj is an Islamic holiday that is observed annually on the 27th day of the Islamic month of Rajab, according to the Hijiri calendar.