good news, i would say safety holeit looks completely dark there was a light spot but I don't know if it was yolk or not
guideline
24 hours internal pip to external pip, then another 24 for external pip to thinking about zipping BUT ducks can sometimes and usually take waaaaay longer to get from external pip to zipping (like 36 hours)
But where yours seems to already have most of the yolk absorbed keep a closer eye on it it may tire and need help zipping, due to a malpositioning in the egg