May 2027 has 31 days, running Saturday, May 1 through Monday, May 31. It carries one federal holiday, Memorial Day on Monday, May 31, and 20 working days.
Memorial Day lands on the final day of the month in 2027, which is the latest date it can ever occupy.
May 2027 also holds ten weekend days — the maximum a 31-day month can contain — with five Saturdays, five Sundays and five Mondays, so the month opens and closes on the same long weekend pattern it runs throughout.
Table of Contents
Holidays in May 2027
One federal holiday and a dense run of religious and cultural observances.
| Date | Day | Observance | Type |
|---|---|---|---|
| May 1 | Saturday | International Workers’ Day, not US observed | International |
| May 2 | Sunday | Orthodox Easter, Pascha | Christian, Julian calendar |
| May 5 | Wednesday | Cinco de Mayo | Cultural |
| May 6 | Thursday | Ascension Day | Christian, Western |
| May 9 | Sunday | Mother’s Day | Cultural |
| May 15 | Saturday | Armed Forces Day | Commemorative |
| May 16 | Sunday | Pentecost, Whit Sunday | Christian, Western |
| May 21 | Friday | Malcolm X Day | Commemorative |
| May 31 | Monday | Memorial Day | Federal holiday |
Memorial Day is the only federal holiday in May 2027 (U.S. Office of Personnel Management).
It is fixed to the last Monday in May under 5 U.S.C. 6103, so it never requires a weekend observance shift.
Memorial Day 2027 falls on the latest possible date
The last-Monday rule confines Memorial Day to a seven-day window from May 25 to May 31. In 2027 it lands on May 31, the final day of that window and the final day of the month.
One consequence carries all the way to September. The span from Memorial Day to Labor Day 2027 — the unofficial American summer — is 98 days, the shortest the calendar permits. The maximum is 105 days, which occurred in 2026.
May 2027 calendar closures by institution
| Institution | Monday, May 31, 2027 |
|---|---|
| Federal offices | Closed |
| Banks and Federal Reserve | Closed |
| U.S. Postal Service | No delivery, offices closed |
| NYSE and Nasdaq | Closed |
| State and local government | Closed in all 50 states |
| Public schools | Closed |
| Retail and grocery | Open, major sale weekend |
Memorial Day is observed identically across every state, unlike Columbus Day or Good Friday. There is no local variation to check.
Mother’s Day on Sunday, May 9 closes nothing. It is not a federal holiday and never has been; the 1914 resolution that established it requested only that the flag be displayed.
Events in May 2027
Month-long observances running through all of May 2027:
- Asian American and Pacific Islander Heritage Month
- Mental Health Awareness Month, observed since 1949
- National Military Appreciation Month
- Older Americans Month
- National Bike Month
The Christian calendar closes its Easter season in May 2027.
Because Easter fell early, on March 28, Ascension Day arrives on Thursday, May 6 and Pentecost on Sunday, May 16 — both roughly three weeks earlier than in a typical year.
Orthodox Pascha falls on Sunday, May 2, five weeks after the Western date.
Graduation season concentrates in the second and third weeks of May. Dates are set individually by each institution and follow no national pattern.
May 2027 is marked by a convergence of major spring observances—including Eastern Orthodox Easter, major Islamic and Buddhist holy days, and Western civic holidays—alongside the elemental shift from Taurus’s steady earth to Gemini’s quick air.
Calendar Events & Observances (May 2027)
| Date | Day | Event / Observance | Category |
| May 1 | Saturday | May Day / International Workers’ Day | Cultural / International |
| May 2 | Sunday | Orthodox Easter (Pascha) | Christian (Eastern Liturgical) |
| May 4 | Tuesday | Yom HaShoah (Holocaust Remembrance Day) | Jewish Commemoration |
| May 5 | Wednesday | Cinco de Mayo | Mexican / US Cultural |
| May 6 | Thursday | Ascension Day (Western Church) | Christian |
| May 6 | Thursday | National Day of Prayer (US) | US Observance |
| May 8 | Saturday | Victory in Europe (V-E) Day | Historical Commemoration |
| May 9 | Sunday | Mother’s Day (Second Sunday in May) | US / International Observance |
| May 15 | Saturday | Armed Forces Day (US) | US Observance |
| May 15–16 | Sat – Sun | Day of Arafah (Hajj climax, approx.) | Islamic |
| May 16 | Sunday | Pentecost / Whit Sunday | Christian |
| May 16–19 | Sun – Wed | Eid al-Adha (Feast of the Sacrifice, approx.) | Islamic |
| May 20 | Thursday | Vesak / Buddha Purnima (Buddha’s Birthday) | Buddhist |
| May 25 | Tuesday | Lag BaOmer (33rd day of the Omer) | Jewish |
| May 27 | Thursday | Corpus Christi | Christian (Catholic) |
| May 31 | Monday | Memorial Day | US Federal Holiday |
Key Observance Details
- Eid al-Adha & Pentecost Convergence (May 16): Pentecost Sunday coincides with the projected first day of Eid al-Adha (10 Dhu al-Hijjah 1448 AH), creating a rare same-day major solemnity across both Western Christian and Islamic global communities.
- Orthodox Easter (May 2): Because the Eastern Christian church calculates Pascha using the Julian calendar, Orthodox Easter occurs several weeks after Western Easter (which fell in late March in 2027).
- Vesak (May 20): Commemorates the birth, enlightenment (Nirvana), and passing (Parinirvana) of Gautama Buddha on the full moon of the lunar month of Vaisakha.
- Memorial Day Weekend (May 29–31): The final Monday in May honors fallen US military personnel and marks the unofficial kickoff to summer across North America.
May 2027 Zodiac, Birthstones & Symbols
| Attribute | Primary Symbol | Details & Lore |
| Zodiac Sign (Early) | Taurus (Apr 20 – May 20) | Element: Earth • Ruler: Venus Grounded, patient, sensory, steadfast |
| Zodiac Sign (Late) | Gemini (May 21 – Jun 20) | Element: Air • Ruler: Mercury Curious, intellectual, adaptable, communicative |
| Primary Birthstone | Emerald (Beryl) | Associated with the Greek goddess Venus; symbolizes rebirth, foresight, love, and flourishing growth |
| Secondary Birthstone | Agate & Chrysoprase | Historical and mystical stones linked to balance, endurance, and mental clarity |
| Birth Flowers | Lily of the Valley & Hawthorn | Lily of the Valley: Sweetness, humility, and the “return of happiness” Hawthorn: Hope, supreme happiness, and protection |
| Celtic Tree Astrology | Willow (Apr 15 – May 12) & Hawthorn (May 13 – Jun 9) | Willow represents intuition and resilience; Hawthorn embodies innovation and duality |
| Elemental Shift | Earth to Air | Moves from Taurus’s steady, tangible creation into Gemini’s mental curiosity and social exchange |
How many days, weeks and working days in May 2027
May 2027 has 31 days, 4 full weeks plus 3 days, 21 weekdays, and 20 working days after Memorial Day is removed.
The calculation:
- May always has 31 days.
- 31 ÷ 7 gives 4 complete weeks with 3 days remaining.
- Ten of the 31 days fall on a Saturday or Sunday — the maximum possible for a 31-day month — leaving 21 Monday-to-Friday weekdays.
- Memorial Day falls on Monday, May 31, a weekday, so 21 − 1 = 20 working days.
20 working days ties October 2027 as the lowest count in the second half of 2027.
May 2027 calendar weekday counts
| Weekday | Occurrences |
|---|---|
| Saturday | 5 |
| Sunday | 5 |
| Monday | 5 |
| Tuesday | 4 |
| Wednesday | 4 |
| Thursday | 4 |
| Friday | 4 |
Five Saturdays, Sundays and Mondays. A month can only hold ten weekend days when it has 31 days and begins on a Friday, Saturday or Sunday.
May 2027 calendar week numbers and day-of-year positions
May 2027 spans ISO weeks 17 through 22 — six ISO weeks, more than any other month in 2027, because the month begins on a Saturday and so clips the tail of one week and the head of another.
May 1 is day 121 of 2027 and May 31 is day 151, placing the month’s end just past the year’s midpoint marker of day 152.
May 2027 moon phases
Times are U.S. Eastern Daylight Time.
| Phase | Date | Time |
|---|---|---|
| New Moon | Thursday, May 6 | 6:58 a.m. EDT |
| First Quarter | Thursday, May 13 | 12:43 a.m. EDT |
| Full Moon — Flower Moon | Thursday, May 20 | 6:58 a.m. EDT |
| Last Quarter | Friday, May 28 | 9:57 a.m. EDT |
The new moon and the full moon peak at 6:58 a.m. EDT, exactly fourteen days apart to the minute.
This is coincidence rather than mechanism — the synodic month runs about 29 days 12 hours 44 minutes, so half a lunation is roughly 14 days 18 hours, and the alignment to the same clock minute happens only when the residual hours cancel against the calendar.
Three of the four phases fall on a Thursday.
Frequently asked questions
How many working days are in May 2027?
20, on a Monday-to-Friday schedule observing Memorial Day. The month has 21 weekdays, held down by ten weekend days — the maximum a 31-day month can hold. Memorial Day on Monday, May 31 is the only federal holiday subtracted.
What holidays are in May 2027?
One federal holiday: Memorial Day on Monday, May 31. Mother’s Day falls on Sunday, May 9, Cinco de Mayo on Wednesday, May 5, and Armed Forces Day on Saturday, May 15. None of those three closes federal offices.
Why is Memorial Day so late in 2027?
Because May 31, 2027 is a Monday, and Memorial Day is fixed to the last Monday in May. The rule gives a possible range of May 25 to May 31, and 2027 lands on the final day. The result is the shortest possible span between Memorial Day and Labor Day: 98 days.
