The Friday before Easter — Christian commemoration of the crucifixion of Jesus.
Good Friday marks the crucifixion and death of Jesus Christ at Calvary. It is observed with solemnity — fasting, prayer, and church services that retrace the Stations of the Cross. The date moves with Easter; it is always the Friday immediately preceding Easter Sunday.
Computed for Winthrop Harbor (America/Chicago) using local sunrise, sunset and astronomical positions.