I knew you can track how many days have pasted ingame by looking at your scrapbook memories. But I didn't know that if you hover over the day/time block it also shows you. Mine is 46 weeks and 2 days....
I don't know. I've had saves I've kept for years because I play Sims 3 and just let everything fall into place letting my sims decide how I'm going to play the game. I love doing generational gameplay in Sims 3.