“whether it be a Tuesday or not”?

Question

There is a claim at this link to another stackexchange question that the usual form is "On rare occasions, whether it be a Tuesday or no, I will go to the supermarket." as opposed to "whether it be a Tuesday or not".

I thought it would be the opposite so I'd like to see it resolved here, please. Is the usual form geographically specific?

Answer 1

Whether it be a Tuesday or no is a stylised construction used only for special effect. It would normally be expressed as whether it’s a Tuesday or not, or something similar.