Due to pandemic restrictions, the processions are expected to be small-scale events, with the Warsaw parade limited to 100 participants.
In line with a long-standing tradition, the Warsaw procession will begin at noon at Castle Square near the city's Old Town district, with the Angelus prayer said by Cardinal Kazimierz Nycz, the metropolitan bishop of the Polish capital.
He will then lead the procession, with a retinue of children and adults in colourful costumes along the Royal Route to a nativity crib in Piłsudski Square, where the event will end with the singing of Christmas carols and a polonaise.
The Feast of the Epiphany is one of the oldest and most important holidays in the Roman Catholic Church. It commemorates the arrival of the Three Wise Men in Bethlehem to pay tribute to Jesus, 12 days after his birth.
In many countries, including Poland, the Feast of the Epiphany is known as Three Kings' Day. It has been a public holiday in Poland since 2011, after a break of more than 50 years.
January 6 is also a day of prayer for Polish missionaries. Around 1,800 Polish priests, monks and nuns currently work on missions in 99 countries, most of them in Latin America and the Caribbean.
(mk/gs)