Marian Days

Marian Days
Ngày Thánh Mẫu
Ceremony after a solemn procession in honor of Our Lady of Fatima
GenreReligious, cultural
BeginsThursday of first weekend in August
EndsSunday of first weekend in August
FrequencyAnnual
LocationsCarthage, Missouri, United States
Coordinates37°09′23″N 94°18′34″W / 37.1565°N 94.3095°W / 37.1565; -94.3095
Years active46
Inaugurated1978
Most recentJuly 31 – August 3, 2025
Next eventAugust 6–9, 2026
Participantsc. 100,000
Organized byCongregation of the Mother of the Redeemer
Websitewww.ngaythanhmau.net

The Marian Days (Vietnamese: Đại hội Thánh Mẫu, officially Ngày Thánh Mẫu) is the main festival and pilgrimage for Vietnamese American Catholics and the largest Vietnamese Catholic event outside Vietnam. The annual event, inaugurated in 1978, ordinarily takes place on the first weekend in August in honor of the Virgin Mary on the campus of the Congregation of the Mother of the Redeemer (CRM) in Carthage, Missouri.

Tens of thousands of attendees come annually from throughout the United States, Canada, Vietnam, Thailand, and Europe. Attendees either opt to camp in parks and yards or fill up local hotels, which additionally boosts the economy of the city and neighboring ones as well. Some residents of Carthage have disapproved of the event, and gang activity in the 1990s and early 2000s has resulted in gun and knife violence. However, many residents look forward to the festival each year and attend to partake in Vietnamese cuisine.

Though the event is religious in nature, it is also a cultural one that gathers families across the United States and the world together in a central location, and is a way for many people to connect with the Vietnamese culture.