May 2027 National Days, Holidays and Events in the USA

In May 2027, the United States has 1 federal holiday — Memorial Day, on May 31 — alongside more than 70 national days, cultural observances, historical anniversaries, and religious dates, including Mother’s Day, Cinco de Mayo, Armed Forces Day, and Eid al-Adha.

Note on moving religious dates: Ascension Day (May 6), Pentecost (May 16), Whit Monday (May 17), and Trinity Sunday (May 23) were checked against Easter 2027 (March 28) and are confirmed correct. Eid al-Adha and the Day of Arafah follow the Islamic lunar calendar and are only confirmed once the crescent moon is officially sighted — most sources place the Day of Arafah on May 15 and Eid al-Adha on May 16–17 depending on the region, so treat these two as estimates, not certainties, until closer to the date.

Full List: May 2027 Dates in the USA

The 5 Most Significant Dates This Month

May 31 (Monday) — Memorial Day

Memorial Day is the only federal holiday in May, honoring US military members who died in service. Banks, government offices, and most schools close nationwide, and it’s traditionally treated as the unofficial start of summer, marked with parades and cemetery ceremonies.

May 9 (Sunday) — Mother’s Day

Mother’s Day is one of the biggest commercial and cultural dates of the year in the US, celebrated with cards, flowers, and family gatherings on the second Sunday of May. It is not a federal holiday, so businesses and government offices remain open.

May 5 (Wednesday) — Cinco de Mayo

Cinco de Mayo commemorates the Mexican army’s 1862 victory at the Battle of Puebla and is widely celebrated across the US with parades, food, and music, particularly in cities with large Mexican-American communities. It is not a public holiday in the US or in Mexico itself outside Puebla state.

May 15 (Saturday) — Armed Forces Day

Armed Forces Day honors members of all branches of the US military and is marked with parades and open houses at military bases nationwide. It falls on the third Saturday of May and is not a day off for federal employees.

May 16–17 — Eid al-Adha (estimated)

Eid al-Adha, the Islamic “Festival of Sacrifice,” marks the end of the Hajj pilgrimage and is one of the two major holidays in Islam. The exact date depends on the sighting of the crescent moon; most 2027 forecasts place it at sundown on May 16 through May 17, but American Muslim communities often confirm the final date only days beforehand.

Frequently Asked Questions

How many federal holidays are in May 2027?
Just one: Memorial Day, on Monday, May 31, 2027.

When is Mother’s Day 2027?
Mother’s Day falls on Sunday, May 9, 2027, the second Sunday of the month.

Is Cinco de Mayo a public holiday in the US?
No. Cinco de Mayo is a cultural celebration, not a federal or state holiday, so schools, banks, and government offices stay open.

When is Eid al-Adha in 2027?
Eid al-Adha is expected around May 16–17, 2027, but the exact date depends on the official sighting of the crescent moon and can shift by a day depending on the region.