St Patrick's Day, on March 17, remembers one of Ireland’s patron saints, St Patrick. It largely celebrates Irish-American culture in the United States.

Many Christians in the United States remember Jesus’ triumphal entry into Jerusalem on Palm Sunday, which marks the beginning of Holy Week. This day is also on the Sunday before Easter Sunday.

Passover (Pesach) generally lasts for eight days in the United States. Many Jewish people spend the Passover period with family members or close friends.

Good Friday occurs two days before Easter Sunday in the United States. It is the day when Christians commemorate Jesus Christ's crucifixion, which plays an important part in the Christian faith. It is not a federal holiday in the United States, although it is a state holiday in some states.

Many Christians celebrate Jesus Christ's resurrection on Easter Sunday. The Easter date depends on the ecclesiastical approximation of the March equinox.

Thomas Jefferson's Birthday celebrations are coordinated by community groups, organizations and venues dedicated to the president, such as the Thomas Jefferson Visitor Center at Monticello, near Charlottesville, Virginia. Public ceremonies, leadership awards, educational games for kids and other activities are held on this day. Presidents' Day also honors Jefferson, fellow president […]

Many United States residents mark Tax Day as the deadline to file their income tax details to the Internal Revenue Service (IRS). The date is usually on or around April 15. However, this deadline may be extended to accommodate holidays or extreme weather conditions.

Arbor Day is a state holiday to promote tree planting in Nebraska and is held on the last Friday of April.

Second Passover, one month after Passover.