April 2, 2023 — Hans Christian Andersen born this day in 1807
April 4, 2023 — Martin Luther King, Jr. Assassinated - 1968
April 5, 2023 — Passover
April 9, 2023 — Easter
April 11, 2023 — National Pet Day
April 13, 2023 — Thomas Jefferson born this day in 1743
April 14, 2023 — Abraham Lincoln Assassinated - 1865
April 15, 2023 — Leonardo da Vinci born this day in 1452
April 17, 2023 — Patriot's Day
April 18, 2023 — Paul Revere Day
April 22, 2023 — Earth Day
April 23, 2023 — William Shakespeare born this day in 1564
April 26, 2023 — John James Audubon born this day in 1785
April 28, 2023 — Maryland Admission Day - 1788
April 28, 2023 — Arbor Day
April 30, 2023 — Louisiana Admission Day - 1812