Honestly I wish there'd been an option to change the speed of the game, because every day passing by in 5 minutes simply drove me nuts sometimes. I almost never could get enough time to really enjoy hunting or playing around with a specific Digimon before they went and changed on me. xD; I mean, the good thing I liked about the monster raising games on the DS is that there aren't egad long waiting times like there are on the PS/PS2 games, but this was really on the opposite end.
If the days were maybe 20 minutes long each, even at least 10, it would've been a lot more engaging for me.
Then again there are probably replay action codes to mess with the timer if I really wanted to do that... XDDD;