Every time I have task that will take days to be finished, I head over to the "Week Calendar" section of
http://www.unrealworld.fi/wiki/index.php?title=Calendar to calculate the exact date the task will be finished.
If the game instead of telling me how many days a task will take to finish/be_ready it tells me:
"X will be finished tanning on Day 3 of 10th week before midsummer point. You may not pick it up yet."
It would be a welcome QoL feature.
And if on top of that a custom map marker was automatically created with the relevant text to remind you that:
"X will be finished xing on Day # of #th week before x point"
That would save me from doing anything!