Walmart is typically open on Christmas Eve, but the hours can vary depending on the location and the day of the week it falls on. In general, stores are open later on Christmas Eve, usually until 10 p.m. or midnight, to accommodate last-minute shoppers. Some stores may also be open on Christmas Day, but many will close early or remain closed until the day after Christmas. It's always a good idea to check your local store's hours of operation before making a trip.