Good Friday, also called Holy Friday or Great Friday, is the Friday before Easter (Easter always falls on a Sunday). It commemorates the crucifixion and death of Jesus at Calvary.

Easter, Pascha, or Resurrection Day, is an important religious feast in the Christian liturgical year. It celebrates the resurrection of Jesus, which Christians believe occurred on the third day after his crucifixion some time in the period AD 27 to 33.

Easter also refers to the season of the church year called Eastertide or the Easter Season. Traditionally the Easter Season lasted for the forty days from Easter Day until Ascension Day but now officially lasts for the fifty days until Pentecost. The first week of the Easter Season is known as Easter Week or the Octave of Easter.

Tax returns in the United States are reports filed with the Internal Revenue Service (IRS) or with the state or local tax collection agency (California Franchise Tax Board, for example) containing information used to calculate income tax or other taxes. Tax returns are generally prepared using forms prescribed by the IRS or other applicable taxing authority.

Tax returns in the United States are reports filed with the Internal Revenue Service (IRS) or with the state or local tax collection agency (California Franchise Tax Board, for example) containing information used to calculate income tax or other taxes. Tax returns are generally prepared using forms prescribed by the IRS or other applicable taxing authority.

Earth Day is a name used by two different observances held annually in the (northern) spring, both intended to inspire awareness of and appreciation for the Earth's environment. Earth Day is in the public domain and open to all persons to shape. Some grassroots Earth Day organizers seek to move the date of the observance to the Summer Solstice, to take advantage of the warm temperatures in the Northern Hemisphere (where most people live) to create greater participation.

Administrative Professionals' Day (previously known as Secretary's Day) is an unofficial secular holiday observed on the last Wednesday of April (April 26 in 2006 April 25 in 2007), to recognize the work of clerical employees such as administrative assistants, receptionists, paralegals, etc. It is celebrated as part of a larger Administrative Professionals Week, which takes place during the last full week of April.