How long is a banana?

How long does it take to grow a banana in Hay Day?

According to the wiki:
Banana Tree page: 1 d 4 h (that is 28 h)
(hayday.fandom.com/wiki/Banana_Tree)

Banana page: 27 h
(hayday.fandom.com/wiki/Banana)

Goods list: 27 h
(hayday.fandom.com/wiki/Goods_List)

After planting a banana tree, I made a note of the exact time of day.
When I tapped the tree, the remaining time was shown as '27 h'.
After several hours, the remaining time was '9 h 37 min'.
Comparing the current time with the time I planted the tree, I calculated the total time, being 28 hours.

So why does it show '27 h' after planting the tree?
I guess in this case '27 h' is the rounded down version of '27 h 59 min' (and 59 seconds).

How long is a banana? 27 or 28 hours?
When I am convinced of the right answer, I will change the 'wrong' wiki pages.
(Or maybe someone else beats me to it)