Nice work. It's a little bit difficult when rng is being cruel (I got two live-concerts in one task), but I think it neatly expresses the amount of work/time that goes into making these projects happen in reality. When the task did seem possible however, there was a lot of frantic fun building up tasks while watching the timer go down. This game really makes you feel like Mori Calliope being a workaholic.
The only bug I was encountering was that icons would be completely detached from the grid when clicking on tasks while they were in the middle of swapping places with other tasks. The icon was detached, but the task 'data' was still occupying a slot and could be dragged and matched, which wasn't an apparent problem at first until I cleaned up my grid and forgot what cell they were in xD. Given that others would likely also be mashing click and moving tasks around quickly, I can see this bug occurring pretty often. I hope you enjoyed making the game as much as I did playing it :D