All Souls Day
“On this day is observed the commemoration of the faithful departed, in which our common and pious Mother the Church, immediately after having endeavored to celebrate by worthy praise all her children who already rejoice in heaven, strives to aid by her powerful intercession with Christ, her Lord and Spouse, all those who still groan in purgatory, so that they may join as soon as possible the inhabitants of the heavenly city.” —Roman Martyrology