Not long at all, piercings don't heal in a month especially the navel piercing, it takes from 3 to 6 months for a good light heal, but is far from healed and seasoned to handle having the jewellery out for long.
You should probably be good after a month or so
Every person is different. A month is not long at all, and especially since it's a navel piercing, it will start to knit shut immediately. You could probably still get the jewelry in (after an hour or a few hours), but you'd be causing damage and asking for an infection.
If you leave it unclipped it will be long.
a month
At least a month.
Early baby pigeons leave after about a month.
month or 2
If the shrimp was bought frozen in the bag look for the expiration date. If not, just assume 1 month long, because that's usually the time it takes for seafood to expire.
At a vacation home tenants leave refriderators on a month or two before returning home you should be just fine.
Just possibly, 36 months!
It depends on the type of piercing and the size of the piercing. If it's a small gauge it will close within a few days, larger gauge a weeks. Just wash the piercing remove the jewellery and clean the area when bathing normally. It will close when it feels like it, you just need to leave it alone.
Just leave it on overnight