May 1, 2023 — May Day
May 5, 2023 — Cinco de Mayo
May 11, 2023 — Minnesota Admission Day - 1858
May 14, 2023 — Lewis and Clark Expedition Commenced - 1804
May 14, 2023 — Israeli Statehood Declared - 1948
May 14, 2023 — Mother's Day
May 20, 2023 — National Armed Forces Day
May 23, 2023 — South Carolina Admission Day - 1788
May 29, 2023 — Memorial Day (Observed)
May 29, 2023 — Rhode Island Admission Day - 1790
May 29, 2023 — Wisconsin Admission Day - 1848