From Advent to New Year the square in front of the Basilica gives home to a charming Christmas fair (also known as Advent by the Basilica). There's an ice-rink in the middle surrounded by a number of vendors selling Christmas-themed arts and crafts, mulled wine, pálinka, fried sausages and other tasty fares. Advent candles are lit each Sunday. The ice-rink is small, but if you feel like hitting the ice during the holiday season, it's the perfect place to be.
Monday - Thursday: 11:30 am to 8 pm
Friday: 10:30 am to 10 pm
Saturday: 10 am to 10 pm
Sunday: 10 am to 8 pm
(Exceptions: Dec 24: 10 am to 2 pm, Dec 25 & 26: closed, Dec 31: 10 am to 4 pm)
More info: http://adventiunnep.hu/en/