are the city of woodstock fireworks june 29th or July 4th? if they are the fourth, whatsgoing on, on june 29th?

I was told the fireworks are june 29th and saw a sign on hwy 92 talking about a summer something that day. But the website says nothing about that day and that the fireworks are the fourth like normal. So what's going on June 29th and when are the fireworks?