

In my part of the US they seem to be rare in houses but common in churches, at least Methodist churches.
Four candles for the Sundays before Christmas. Most have purple candles for three Sundays but one pink one typically lit on the third Sunday. Most also have a more prominent, central, white. christ candle that is lit for Christmas eve services and Christmas day. Some churches then remove the wreath but continue lighting that candle until later in the church year.
Typically a family will be asked to light the candles for each service and recite a reading.
The candles/days are usually themed: Hope, peace, joy, then love. Sometimes they are associated with characters from the story. E.g. pink being Mary’s candle.

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