The big two oh
ebay
when it was someones birthday stargirl liked to
No. Numbers in a normal sentence are not capitalized. Example: "My birthday is on the twentieth of January."
when it's someones birthday
Rainbow
its is the year of the horse. on the twentieth sunday.
You would call it "mind control".
no
look at their pupils
You can ask them, or look on their page to see. But there's nowhere that says when a person's birthday is.
you could make a bday card for his/her bday
example: 9/19/99