May 2031 Calendar
May 2031 has 31 days, starting on a Thursday and ending on a Saturday. It spans ISO weeks 18–22, with 22 weekdays and 9 weekend days — and 13 public holidays across the 12 countries listed below.
May 2031 month grid
May 2031
| W | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| 18 | 28 | 29 | 30 | 1 Labour Day · Workers' Day | 2 | 3 Constitution Day | 4 Greenery Day |
| 19 | 5 Early May bank holiday · May Day · Children's Day | 6 Greenery Day (substitute day) | 7 Full Moon 03:40 UTC | 8 Victory Day | 9 | 10 | 11 |
| 20 | 12 | 13 Last Quarter 19:07 UTC | 14 | 15 | 16 | 17 | 18 |
| 21 | 19 Victoria Day | 20 | 21 New Moon 07:17 UTC | 22 Ascension Day | 23 | 24 | 25 |
| 22 | 26 Memorial Day · Spring bank holiday | 27 | 28 | 29 First Quarter 11:20 UTC | 30 | 31 | 1 |
| 23 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
12 public holiday 🌑 🌓 🌕 🌗 moon phase (UTC date) W = ISO week
Public holidays in May 2031
| Date | Holiday | Observed in |
|---|---|---|
| Labour Day | Germany, France, Brazil, Mexico | |
| Workers' Day | South Africa | |
| Constitution Day | Japan | |
| Greenery Day | Japan | |
| Early May bank holiday | UK | |
| May Day | Ireland | |
| Children's Day | Japan | |
| Greenery Day (substitute day) | Japan | |
| Victory Day | France | |
| Victoria Day | Canada | |
| Ascension Day | Germany, France | |
| Memorial Day | US | |
| Spring bank holiday | UK |
No national public holiday in May 2031 for the selected country.
National holidays only, from the open-source date-holidays dataset. States, provinces and regions add their own — see each country's holiday page for the full list and observances.
Moon phases
- Full Moon
- Last Quarter
- New Moon
- First Quarter
Times are shown in your time zone when JavaScript is on, UTC otherwise; near midnight the local date can differ. For moonrise and moonset see the moon pages for New York, London or Sydney.
May 2031 at a glance
- Days
- 31
- Weekdays
- 22
- Weekend days
- 9
- ISO weeks
- 18–22
- Day of year
- 121–151 of 365
- Quarter
- Q2
- Days left in 2031 after the 31st
- 214
- Friday the 13th
- No
The name: Named after Maia, a Roman goddess associated with growth.
Working days by country
Monday–Friday minus national public holidays that fall on a weekday. Regional holidays are not subtracted.
Need a span that crosses months? Use the date and time calculator.
May 2031: common questions
How many working days are there in May 2031?
May 2031 has 22 weekdays (Monday to Friday) and 9 weekend days. In the United States, Memorial Day (Mon, May 26) falls in the month, leaving 21 working days. In the United Kingdom, Early May bank holiday (Mon, May 5) and Spring bank holiday (Mon, May 26) leave 20 working days (UK-wide bank holidays only; England, Scotland and Northern Ireland each add their own).
What week numbers are in May 2031?
May 2031 covers ISO weeks 18, 19, 20, 21, 22. ISO weeks start on Monday, so May 1, a Thursday, falls in week 18.
When is the full moon in May 2031?
Wednesday, May 7 at 03:40 UTC. The new moon is on Wednesday, May 21.
What day of the week does May 2031 start on?
May 2031 starts on a Thursday and ends on a Saturday (the 31st). It runs from day 121 to day 151 of the year.