Typically, the morning of Christmas Eve is busy and it will taper off by around three in the afternoon, that's with the exception of Santa who has long lines all day. By that time people are going home to finish last minute wrapping. The day after Christmas is very, very busy.
As soon as the weather became brisker apparel sales went up. Jewelry is also popular because a lot of men purchase jewelry as a last minute gift. Expect a lot of traffic in that area.