What time is dinner??

Thanksgiving, a day of getting together with family and friends and eating lots and lots of food. Lets talk about what time we are doing this....

Normal people, normal day: Up at 6 or 7, breakfast, lunch at noon, dinner at 5 or 6.
This is pretty standard.

Me, normal day. Up at 9ish, no breakfast, cold lunch in-between wheel building, dinner at 8 or 9....
This is just cause of the dynamics of working at the shop and how things go all day.

Thanksgiving holiday: Dinner is at the weirdest times, non of which are 12 or 5. Why is this?? Why does everyone just up and change the eating times for this day? 10:30 or 11?? Turkey and mashed potatoes with gravy at 10:30am?? Who does that? You can't get Mcdonalds lunch at 10:30 on a Normal day but all of the sudden it is exceptable to eat a full dinner?? How about 3pm lunch? Where is the thinking in this? "It's a special day so skip noon, and forget the 5 oclock dinner, we'll run in-between at 3."

Never really understood why normalcy is completely thrown out the window... Either way, my dinner was amazing and even though it was the only time I ate that day, When Mom says to be there at 3, you be there at 3!!!!