The Scientist and Baby Bird on their respective 1st birthdays
There is a German Kultur Tradition here that one can not wish or speak Happy Birthday to someone unless it is on or past their birthday.
This rule is strictly enforced to the point where my German friends, when invited to my birthday party the day before my actual birthday, thought that they understood me incorrectly and showed up the next day (which was a Monday) because it was so unbelievable to them that I would have my party BEFORE my birthday.
This was of course before I knew about this tradition but another dilemma around this has come up. Baby Bird's birthday is coming up. His birthday is during the week (closer to the beginning of the week) which means that normally we would have it the weekend afterward but I have a big concert coming up with dress rehearsals. I don't mind missing rehearsal for my son's birthday but wouldn't it just be easier for all involved if we could have it the weekend before?
I am weighing "logic" vs "when in Rome, do as Romans do." (or aka: How much do I care if they give me blank stares at something I am doing that is strange to them)