I don't think it's to do with time, but more to do with the probability of finding it. In my opinion something is missing if there is a high chance of finding it but if you will never find it and is no chance of that happening it will be considered lost. That's just my opinion.
About a week -_- I lose a ton of stuff
A few minutes after I start looking. If I misplace things, it's usually gone.
Entire day. Once you start searching for it, chances are you already know where it is. And if you only consider it to be misplaced for a few minutes or hours, you're probably doing other things in between (other than searching). So, yeah. Entire day. It wasn't worth this much explaining, but I just felt like exaggerating. xD
You're welcome. â€¢â—¡â€¢
I think something considered "lost" would be missing for an entire day.
Thanks for your response!