Just like cloud sync, the calendar sync needs to auto sync when the user closes out of the program. I forgot to sync it last night before I logged off my PC. Because I don't turn or work at my PC in the morning before I go to work, I was left with an incorrect day view in Google Calendar mobile app. I don't have access to MLO desktop during the day, only through mobile, so calendar sync needs to do the same thing that cloud sync does and auto-sync at sign off.
Joel