Finally a context for a dad joke, I've had laying around!
What's sitting on the bottom of a bucket going "dav dav dav"?
A spandauer
Can't recall having heard "Dav" used as a greeting for ages. I'm 40+ and been living in Copenhagen most of my life. I've heard "Godaw" once in a blue moon, when talking to people from Jutland
I had a feeling "Dav" might have uncommon or limited usage. What's amazing is that the language program/book I'm starting (Get Started in Danish) has "Dav" as the second word they teach, with the definition "Hello/Hi" and no other context. 😬
I think a lot of people answering here have not been in Jylland since it's quite common in some areas and circles. I feel like I've heard it myself quite a lot, so much so I do it myself now even after I moved to kbh.2 years ago.
I think it might be more about the circles you're in. I personally haven't heard or used it while living in various places in Jutland, albeit urban areas.
It may be used more often with rural people and/or 40+ but I don't have an anecdote to back it up. I'd probably wait til the rest of Feddit wakes up so you can get a bit more insight as I'm no expert.
I've grown up in a rural area, and while I associate dav/davs with old farmers or workers, I rarely hear them use it nowadays.
I occasionally use "davs" semi-ironically but it is definitely not the most common greeting. It's probably not a greeting you should use the first time you meet someone, or at a job interview, but it is fine (albeit a bit atypical) for greeting friends. Hej or hey are more common, and as a bonus, also much easier to pronounce for the average English speaker.