November 1
November 1 is the 305th day of the year (306th in leap years) in the Gregorian calendar, with 60 days remaining until December 31.[1]It is observed worldwide as All Saints' Day in Western Christianity, a solemn feast dedicated to honoring all saints—canonized and uncanonized—who exemplified lives of holiness and martyrdom in accordance with scriptural teachings.[2][3] In the Catholic tradition, it constitutes a holy day of obligation, often marked by special Masses and liturgical commemorations of the communion of saints.[4] The observance traces its formalized structure to the 8th century under Pope Gregory III, who dedicated a chapel in St. Peter's Basilica to saints' relics, though earlier local customs of venerating the dead on this date existed in Celtic regions.[5]
In many historically Catholic nations, including Austria, Chile, Germany, and the Philippines, November 1 serves as a national public holiday, closing businesses and schools to facilitate religious and familial remembrances.[6] It coincides with the initial phase of Día de los Muertos in Mexico and related cultures, focusing on the Day of the Innocents to honor deceased children through altars, offerings, and cemetery vigils, blending indigenous ancestral rites with Catholic influences.[7] The date has also borne witness to transformative historical occurrences, such as the 1755 Lisbon earthquake and tsunami, which razed the Portuguese capital, claimed up to 60,000 lives, and catalyzed theological and philosophical debates on divine providence amid natural catastrophe. Other defining events include the 1800 entry of President John Adams into the unfinished White House as the first U.S. president to reside there, and the 1952 detonation of the first full-scale thermonuclear device by the United States at Enewetak Atoll, advancing Cold War-era nuclear capabilities.[8][1]