On: North American English Dialects

[ddxv]

I couldn't figure out, what is the difference between "on as in dawn" vs "on as in don"? I watched several examples but felt like the all sounded the same?

[kaashif → ddxv]

I think the examples on this page are clear: https://en.m.wikipedia.org/wiki/Cot%E2%80%93caught_merger where cot/caught is the same difference as don/dawn.