sims 3 crashing at the same time?

hello, again! i'm back since i found a solution to my problem last time i posted here and hopefully i will this time as well. my problem now is that my game keeps crashing at around 2:18 pm. like, that time EXACTLY. all three times i tried to play that happened. this is completely random, by the way. everything was fine in my saved game for the past week i've been playing. i played for a few hours today and then out of nowhere it just crashes. i noticed it was at 2:18 pm so when i loaded it back up, i made sure to save very frequently. and what do you know, it crashes at 2:18 AGAIN. i tried one more time, and it crashed at 2:16 pm. i've kind of given up for now which is why i've come to the forums. i have some mods, including nraas but i don't think that's causing the problem. there's nothing that's caused any issues before or earlier today. however, i have had this issue once before, a few weeks back. it kept crashing at 1:17 ish am but after a few relaunches it stopped. i'm kinda fed up with restarting the game tho considering it takes over half an hour to load up with all my cc and i've already done that 3 times so i've come searching for answers here lol.
i figured it was probably something that was going on in the game that was causing the crash. all that happens at that time is that's approximately the moment one of my sims leaves her workplace. one sim leaves school around that time and one carpool stops at the house to pick up one of my sims for work. literally NOTHING else happens. i don't understand what could be causing the problem.