0 in History
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International Workers' Day or Labour Day (International), and its related observances: Law Day (United States), formerly
International Workers' Day or Labour Day (International), and its related observances: Law Day (United States), formerly
May Day (beginning of Summer) observances in the Northern hemisphere (see April 30): Calan Mai (Wales)
May Day (beginning of Summer) observances in the Northern hemisphere (see April 30): Calan Mai (Wales)
Christian feast day: Ahudemmeh (Syriac Orthodox Church)
Christian feast day: Ahudemmeh (Syriac Orthodox Church)
Christian feast day: Athanasius of Alexandria (Western Christianity)
Christian feast day: Athanasius of Alexandria (Western Christianity)
Christian feast day: Bolesław Strzelecki (Catholic Church)
Christian feast day: Bolesław Strzelecki (Catholic Church)
Christian feast day: Boris I of Bulgaria (Bulgarian Orthodox Church)
Christian feast day: Boris I of Bulgaria (Bulgarian Orthodox Church)
Christian feast day: Joseph Luu Van Nguyen (Catholic Church)
Christian feast day: Joseph Luu Van Nguyen (Catholic Church)
Christian feast day: William Tirry (Catholic Church)
Christian feast day: William Tirry (Catholic Church)
Christian feast day: May 2 (Eastern Orthodox liturgics)
Christian feast day: May 2 (Eastern Orthodox liturgics)
The last day of the Festival of Ridván (Baháʼí Faith) (this date is non-Gregorian and may change according to the March
The last day of the Festival of Ridván (Baháʼí Faith) (this date is non-Gregorian and may change according to the March
Anniversary of the Dos de Mayo Uprising (Community of Madrid, Spain)
Anniversary of the Dos de Mayo Uprising (Community of Madrid, Spain)
Teachers' Day (Iran) (this date is non-Gregorian and may change according to the March Equinox, see List of observances
Teachers' Day (Iran) (this date is non-Gregorian and may change according to the March Equinox, see List of observances