I Belong In The Month Of December

Riddle: I am from the month of December. I am not a holiday. I am the only month that has this. What am I?

Answer: The letter D. The first letter of the month.

Source: https://www.riddles.com/7592

I am from the month of December. I am not a holiday. I am the only month that has this. What am I? — I belong in the month of december by Orion Leon v1.

Riddle: I am from the month of December. I am not a holiday. I am the only month that has this. What am I? Answer: The letter D. The first letter of the month. — by Orion Leon v2.