I got this on Day 43, there are lots of items piled on top of each other in parts of these levels.
By this day, you have to pass 3 missions to pass the day, I believe it is in the second mission on this day.
If you use a laser scanner, you should easily get a 25 combo on this day. If you haven't got one, you can buy one for 3000 game coins from the game shop.
There may be earlier parts you could get this but it is much easier to wait until this day.