Since apparently I can’t stop obsessing over their birthday:
•because the Hirsch twins birthday is 618, the Pines twins birthday is 816. That’s my theory and I’m sticking with it unless I get proven otherwise
•this is also Stan’s birthday (and his twin’s birthday if you are a believer of the Stan Twin Theory) idk why I think that. I just do.
•Stan knows his birthday is on the same day as Dipper and Mabel’s, but he’s not gonna say anything because he doesn’t want them to feel like they have to share their birthday anymore than they already do (since they already have to share it with each other)