Click on the May holidays listed in blue for more details.
| Holidays | Date | Details |
|---|---|---|
| May Day 2023 | May 1 - Monday | Observance |
| National Day of Prayer 2023 | May 4 - Thursday | Observance |
| Cinco de Mayo 2023 | May 5 - Friday | Observance |
| National Nurses Day 2023 | May 6 - Saturday | Observance |
| Lag BaOmer 2023 | May 9 - Tuesday | Jewish |
| Mothers' Day 2023 | May 14 - Sunday | Observance |
| Peace Officers Memorial Day 2023 | May 15 - Monday | Observance |
| Ascension Day 2023 | May 18 - Thursday | Christian |
| Armed Forces Day 2023 | May 20 - Saturday | Observance |
| National Maritime Day 2023 | May 22 - Monday | Observance |
| Shavuot 2023 | May 26 - Friday | Jewish |
| Pentecost 2023 | May 28 - Sunday | Christian |
| Memorial Day 2023 | May 29 - Monday | Federal Holiday |
| Whit Monday 2023 | May 29 - Monday | Christian |
