Nothing more annoying than withdrawing all of your stone/wood, clearing a spot on your farm, and hiking up to Robin's only to discover that she's closed
Even just having the days they're open noted on the calendar? Cause 2000 G is worth it for me to be able to plan around shop schedules!
Also the calendar layout bothers me. I get that each month is 28 days, but it's a little frustrating having the gift-week not follow the calendar. If Sunday is the start of a new week, it should go before Monday on the calendar. Just shift everything over one and add a row at the bottom for the extra day (and a peek at next month's first week.)