Please don't allow it to upset you.
You don't say how physically close you are to your daughters, or where their in-laws are. Are they going to their in-laws, or having them over to their house? There are several options you can take.
Spend the day on your own, in a way that would give you some joy. It could be church, then volunteer, and eat all the snacks you can imagine. You could go away somewhere, or you could stay in bed and watch TV all day. Pre-arrange a facetime call. Make a plan so you have something to look forward to.
Plan an alternate day for your family. It sounds like you rely on them to invite you over; do the opposite. Invite them over for either Boxing Day, Christmas Eve, or any other evening; host a dinner for them, and have the children open their presents at your house. If you're not up to doing dinner, then order in.
If the in-laws are close, I don't think it would be out of order to invite yourself to pop over for a quick afternoon visit, not imposing on a meal. Our house is open-house in the afternoon on Christmas day, and several neighbours and friends will pop by for a drink. That way you get a chance to visit, without intruding. I would only do that if they were physically close though, if they knew you were travelling an hour to see them, then the in-laws might feel they had to ask you to stay.
Please try not to feel sorry for yourself. It sounds like your daughters have so far spent Christmas with you, so their in-laws are due to have their day. Think how lucky you have been so far, and make an alternate plan.