Mary conceived without original sin, kept nine months before her nativity.
Dates
| Year | Dates | Reckoning | Notes |
|---|---|---|---|
| 2025 | December 8, 2025 | ||
| 2026 | December 8, 2026 |
Recurrence: Gregorian fixed date.
Significance
The Immaculate Conception, on December 8, celebrates Mary being conceived without original sin, in view of her Son's merits. The doctrine was defined as dogma by Pope Pius IX in 1854. The feast falls nine months before the Nativity of Mary on September 8.
Observance
Mass is celebrated for the solemnity, and the day is a holy day of obligation in many countries.