Most of us like to plant our similarly timed crops together to add a bit of design to our farms, so when it says a crop will take "1 day" to grow, we should naturally assume this means 24 hours. NOT! When FS was first released, we quickly learned that "1 day" actually meant 22 hours, which is perfectly fine. We became accustomed to this and timed our crops accordingly. However, when all those holiday crops hit last fall and winter, the "1 day" crops took 24 hours to grow, which really messed with my personal design. The recently released yellow azalea "1 day" crop only takes 22 hours to grow, so one would think we were back to how it was originally. NOT! I just planted my first round of red carnation, another "1 day" crop, in a planned pattern with the yellow azalea only to discover that the red carnation takes 24 hours to grow. So now, I have to wait 2 hours after the yellow azalea is ready before anyone can see the design in full bloom.
Honestly, it really doesn't matter if it's 22 or 24 hours (I personally prefer 22), but good grief, make up your mind! Make a decision one way or the other and be consistent! It's almost like there's no communication between designers and definitely no guidelines in place.