GC 44: Your favorite holiday

I'm sorry to be late again
The weekend's been quite busy;
So here's a poem, written not with pen
Come read it, it won't make you dizzy
Holidays, there are many a year
Round the clock, 'bout them you can be reading
I can think of one that brings much cheer,
Singing, family, and lots of eating
This holiday's the greatest of all
My favorite one, it's definitely this
And it's coming up quick, for it's now fall
Soon there won't be anything to miss!

(And it turns out this poem is an acrostic.)