All Souls' Day, a feast commemorating all deceased Christians, grew to become common inside the 12th century.[69] Its date was fixed on two November, the working day after All Saints' Day. By the tip of the 12th century, they'd become holy days of obligation necessitating church attendance in Western Christianity https://youtube.com/shorts/XxJicTFshOk?si=MWe_21sO5t57InfB