Birthay is the name given to the particular date each year on which people in many cultures celebrate the anniversary they were born. It is traditionally marked by a birthday party or, in some particular cases, a rite of transition.
Trivia about birthday
Alexander Pope described this personal anniversary as "the funeral of the former year"
A random group must contain 23 people for there to be an over 50% chance that 2 of them will have the same one of these
"Today is Father's Day, so everyone out there, Happy" this, a 1968 Beatles tune
Lady Astor, on seeing her family assembled: "Is it my" this "or am I dying?"
The Queen of England's "official" one is on the 2nd or 3rd Saturday in June