23029... umm how about using an alarm? And umm... place a watch with a date on it next to you? That way you would be able to umm, tell what date and day it is...
23043 Alarms dont really seem like the best way to wake... if you leave the window open then the light would wake you naturally... which can be bothersome too if you want to sleep in xD
Sorry to bring in the news, but this one just got updated again not too long ago. I'm not terribly interested in the game, so feel free to take your time to update it. 敗戦隷姫エルネア to v25.04.23