Yes, the word "Birthday" should be capitalized in the sentence "Clayton's Birthday is tomorrow" as it is a proper noun referring to a specific event or occasion.
have a few friends over and have fun
Tomorrow is Dr.Seuss's birthday. He was born on March 2,1904. He is turning 109 tomorrow.
Of course! Happy Birthday tomorrow!
tomorrow is sunil gavaskars birthday
No, the word "on" is not typically used before the word "tomorrow" in a sentence. Just say "tomorrow."
Tomorrow is my birthday!
Tomorrow
tomorrow
no
tomorrow
No, but Chuck Norris did.