Interesting and good question there. I had to do a little of searching into this, that start with an Y, and there is ONLY one; and that is:
Yom Kippur - Jewish Holiday
winter
Thanksgiving
a honest word that starts with y
Yuengling is a popular beer. It starts with the letter Y.
Ebeneizer Scrooge
what is from Michigan that starts with y?
One such holiday is Easter.
winter
Thanksgiving
Oktoberfest
springbreak
there is no one that starts wit a y in twilight
a compound word that starts with y is yourself
Honica starts with a H
Words that can be made from the letter in 'holiday' starting with I are: I and id.
Groundhog Day is a holiday in Punxsutawney, Pennsylvania.
A word that starts with y and ends with y is yay .