Pork left in the sun for long hours may be unsafe to eat. It should be thrown out.
2 hours
200 hours
At least 4 hours, in a refrigerator. If it's too "watery" when you make it, it may not set, no matter how long you leave it.
Grout typically takes about 24 to 48 hours to set properly.
It typically takes 24 to 48 hours for tile to set properly.
Rust & rot.
If you set your oven to 280 degrees, you need to cook it for 4 hours. If you set your oven to 140 degrees, you need to cook it for 8 hours.
The Earth rotates about its axis, causing the sun to rise and set. A full rotation happens every 23.934 hours. (Which is close to 24 hours, which is why a full day-night cycle is about 24 hours long.)
Certainly it is more cheaper to set heating for two hours morning and evening rather than to set it for all day long.
Caulking typically takes about 24 hours to dry and set completely.
Caulking typically takes about 24 hours to dry and set completely.
Cheesecake typically takes about 4-6 hours to set properly in the refrigerator.