I was born on traditional US Memorial Day - May 30. It really hasn’t been an issue in my life.
Mine falls around (US) Memorial Day weekend. Kind of nice. If it fell on the Friday before, that was not fun. The main duties of that day were school and then packing for going up to the cabin for the weekend. Then, hopefully, in all the folderol, my parents would remember my existence and stop somewhere for ice cream on our way out of town.
My daughter’s birthday is in early December. We made a rule that XMas was not to intrude into her day, so no decorations up until the day after. She was having a crisis yesterday - they received a bunch of snow, she was starting to feel Xmassy, but didn’t want to decorate yet. She finally decided to put up her little 2’ Disney decorated tree, but nothing else. Weird woman.
My older daughter is a New Year’s Eve baby, and it’s got three things going for it:
- At birth, we got a year’s worth of tax deductions for nine hour’s worth of expenses.
- During these young years, when she has a birthday slumber party, other parents practically weep with gratitude that they get to be child-free on New Year’s Eve.
- When she’s older, everyone will want to have a party on her birthday.
My late best friend was born on July 4. I always honor his memory by keeping it about him.
My grandson (now almost 6) was born on December 25. We’ve always celebrated his birthday on February 2 (Groundhog’s Day). He thinks that’s normal. He knows he gets older on December 25 and the celebration is later. I highly recommend this “solution” to the Christmas birthday dilemma.
My brother and I were both conceived on New Year’s Eve, 3 years apart. Apparently, my father wouldn’t perform unless he had a few drinks in him. And NYE was the only time he drank.
Fast-forward: joint birthday parties. 
Not a holiday, but my Dad was born on February 29. We’d celebrate on the 28th on the “off” years and made sure birthdays on an actual 29th were special.
Although he lived to 96, he only celebrated 24 birthdays.
One of my brothers was born right before Christmas, and always got screwed out of gifts/parties.
If you’re an observant Jew, Passover sucks for a birthday, because Kosher-for-Passover cakes are bad. (Though they’ve gotten better over the years.) My second son has this circumstance.
My birthday is November 11–Veterans Day.
I’ve always had a day off from school and a parade on my birthday. Yay me! When I was a kid, I thought everyone had the same.
My birthday is mid September, safe and dull as far as US holidays are concerned. And then I met Mrs Iggy, a Colombian.
My first birthday as a couple we were apart and I was chatting with her. After quite some time of conversation I finally did the whole “you know what today is?” routine. And she replied, of course and she was wondering when I was going to get around to mentioning that it was Día de Amor y Amistad… sort of Colombia’s version of Valentine’s Day.
December 25th is the worst. Poor Jesus.
My brother’s birthday is on Halloween and I was always jealous. Big birthday dinner (with whatever main course he wanted, then ice cream and cake), followed by opening gits, then finally getting to go out to trick-or-treat.
I submit that early January (my birthday) is the worst. By that time, there have been parties for Halloween, Thanksgiving, Christmas, and New Years Eve/Day, and everyone is finally able to come down from all the partying. Heck, I’m tired of all the partying and don’t particularly want more cake, presents, and ice cream.