Indexes fell in their first trading day after Christmas as traders hope for a so-called Santa Clause rally to propel markets higher into the new year.

It’s almost time to unwrap those presents: Christmas is coming up on Dec. 25, and so is Hanukkah, the eight-day Jewish festival of lights, which begins this year on the evening of the 25th. With all this holiday activity, it’s worth keeping in mind what will be open and closed when. Here’s our quick guide.