Growing up we skipped breakfast and had a big Christmas lunch at around 12.30pm and then we would have left over meat in sandwiches for dinner. In laws don't eat anything all day and serve Christmas lunch/dinner at 4pm, they also don't allow you to make anything in their kitchen, so if you are staying at their house for Christmas/ Christmas eve you need to take your own snacks otherwise you are starving by the time food is served.
Is it more common to serve the Christmas lunch later in the day or around lunctime around 12ish?