When Is Immaculate Conception 2026?

Live Countdown to the Holy Day

Immaculate Conception falls on Tuesday, December 8, 2026 — 55 days from now.

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Immaculate Conception 2026 falls on Tuesday, December 8, 2026. Live countdown, dates through 2030, and how the date is determined.

The Immaculate Conception is the doctrine that the Virgin Mary was free of original sin from the moment of her conception. It is one of the four Marian dogmas of the Catholic Church. Debated by medieval theologians, it was not defined as a dogma until 1854, by Pope Pius IX in the papal bull Ineffabilis Deus. While the Immaculate Conception asserts Mary's freedom from original sin, the Council of Trent, held between 1545 and 1563, had previously non-dogmatically affirmed her freedom from personal sin. The solemnity is fixed on December 8.

Immaculate Conception falls on Tuesday, December 8, 2026. The countdown above updates live, so you always see exactly how many days, hours, and minutes are left.

Immaculate Conception dates by year

Year	Date
2026	Tuesday, December 8, 2026	in 55 days
2027	Wednesday, December 8, 2027	in 420 days
2028	Friday, December 8, 2028	in 786 days
2029	Saturday, December 8, 2029	in 1151 days
2030	Sunday, December 8, 2030	in 1516 days

Why does the date move?

The Christian year mixes two kinds of dates. Fixed feasts like Christmas and Epiphany fall on the same calendar day every year. Movable feasts — Easter and everything anchored to it, from Ash Wednesday to Pentecost — are set by a lunar rule: Easter is the first Sunday after the first full moon on or after March 21. Orthodox churches apply the same rule on the older Julian calendar, which is why Orthodox Easter and Christmas usually differ from the Western dates.