What are old hours in real time?

Because it does say old...example of one of mine has old 06hr ....I don't understand how long it is too.

You are mis-reading it. It is NOT letter o, letter l, letter d. It looks. Look again, it is number zero, number one, letter d. Which means 01 day, which equals 24 hours. So your timer shows you 24+6=30 hours.

I bought something yesterday that said it would be 12 hours. When I went on the game today after the 12 hour mark, it said 0h 0m but it did not have the bow around it to get the flowers. I went on the game later and now it says 21h 17m. When old appears it seems to add time. I see the word "old". It is not the same o as a 0 (the "o" and zero are different)

01d = 24 hours

I was reading "old".. like everybody else, I suppose. They should write this in a better way. So, I have a building showing O1d 00 hr. Shouldn't it be ready?

No, 01d 00hr, means 1 day left or exactly 24 hours.

If it says 12 hrs it should be 12 hrs.....you shouldn't be adding time. It takes too long as it is. Losing interest in this fame.