I am not the best at candling eggs, but I can see that you've got some air cell and some nice dark solid and veins are not really showing...so to me it looks to be around 15plus days...so if all is well it could hatch soon.
Here is a good site to compare candling stages. I don't have a tactical bright flash light (just a bright LED one) so what I see is never as good as those photos...hence my deficiency at being a good candler.
https://www.backyardchickens.com/t/...g-candling-pics-progression-though-incubation
Good luck,
Lady of McCamley