Tuesday, May 19, 2015
This day is covered in these episodes:
Bit of a stretch, but it could be this date: Satou says that she has uploaded a simulation chart "yesterday". The simulation chart highlights May 18.
Satou's simulation chart. May 18 is highlighted. Satou: "Miyamori-san, I uploaded the simulation chart just yesterday."
The characters are also dressed for warm temperatures.