Probably days. Does the female have a saddle at the same time? That can also be an indicator.
I did notice 1 or 2 saddled and berried, so they should be ready to go soon too. Some are PFR's, so its hard to see the eggs or eyes or saddles and some have green eggs, so its hard to see the eyes on them.
My crystals all got berried around the same time as the cherries, so they should be close too. Again, they have the dark eggs, so I can't see any eyes to gauge and its always hard to see a saddle on the crystals but I would imagine they should all start popping soon.