Two weeks
For as long as the customer wants it to be kept open.
Actually I have kept my eyes open for about four minutes, but I had contacts in. With out contacts in I can only keep my eyes open for 45 seconds.
kipper
i kept the windows open whole night.
rings of cartilage
Many many airports around the world were kept open during 9/11.
Not exactly sure, I've never kept it after an hour. Plumbs drug formulary says 6hrs though.
An open bottle of Baileys Irish Cream typically lasts about 2 years when stored properly in a cool, dark place, away from direct sunlight. However, for the best taste and quality, it's recommended to consume it within a year after opening. Always check for any off smells or changes in appearance before drinking. If kept refrigerated, it may last even longer.
The open door policy
The Cream Poffs can go limp and flat.
cartilage
Like most fish, they lay eggs. Herring females lay their eggs in shallow open water and they sink to the bottom.