how long can hard boiled eggs remain ok without being refrigerated?

If the eggs are in a cold room, they can stay up to 2-3 days.

More than 6 hours as I think. When were kids my mother used to preper the boiled egg like 6 in the morning but we were waking up too late like after 12 o'clock and find the egg on the kitchen table and still edible:)

as long as they are in a cool place and not in direct sun or heat, they will be okay for several hours...like up to 4 hours...that is just my own personal experience. I would not want to eat them after that myself.