ummm....I know I had to cut the video off early and didn't get all of them because my battery was crapping out on me. Let me see if I can get a still.
The fireworks went on for a good 2.5-3 hours, counting little pauses for setup inbetween.
Edit:
Each string of firecrackers (each length of the yard) took about 1 minute and 57 seconds of straight bangbangbangbang. I timed it with a stopwatch.
There was all kinds of ash-fallout and hot embers raining down and I hid under the deck. Here's my view:
Imagine that for about 3 hours nonstop.
:america