In Eastern Christianity, Sunday of the Prodigal Son, which is a day calling attention to the parable of the Prodigal Son, occurs on the second Sunday of a three-week period prior to the commencement of Great Lent.
This day falls a few weeks before the beginning of Lent, and uses the parable of how the prodigal son was welcomed back to his father's home as assurance that if someone has strayed from God that God will welcome them back with open arms as well.
Here are some ways you can observe this day according to Eastern Christian tradition: