Sorry I'm just a bit confused and want to make sure I do it right! Is the run to get to one town and take the griffon and back to the farm and to THEN get to another town and take the ferry back to the farm? And that's when the time ends? when you get back to the farm the second time?

Sorry that this took so long to get back to, Im kind of out of the sun haven scene and I couldnt reply to this for a while for whatever reason (Like legit website wouldn't let me) But yeah, time ends as soon as the farm loads after you take the griffon or the ferry back to the farm (whichever you unlocked second)