normally give them the 25th cause it's more meaningful to them as christians, then and that's it. this year they get the 26th off too because it falls on a sunday. that's just legally speaking. of course if you want you can give them more time off OR if you have guests you can always negotiate and have them take another day off instead of the 25/26th...everything CAN be set in stone, but doesn't have to depending on how you work the system to make it work for your helper and you