You seem to have a lot of parades.
Thanksgiving, New Year and 4th July are three I can think of.
We have the Lord Mayor's Show in London, but that's about it.
However, in my part of the country there is carnival which goes back to the Medieval tradition of carnival and lent.
Basically towns in the West Country will have acarnival, loads of floats turn up, do a parade and then go to the next town and do it again.
It goes on through Octover and November, but it's strictly local. I don't think it gets televised.