That's a real beauty. I've never seen one that lasted quite that long!
I love backyard fireworks, even though they can be scary. They're not legal here, so I haven't seen one in years and years, but I think they still are where I grew up (like the "whirlybird" one that took off sideways and chased my dad across the backyard instead of going straight up!)
Anyway, Happy New Year to you and your family!!