Complex sentence: It is told that at 7am when the bell rang, everyone knew it was time to get up and go to work; at noon when the bell rang, lunch, and at 6pm when the bell rang again the family would gather and share dinner together.
Split into simpler sentences: It is told that at 7am when the bell rang, everyone knew it was time to get up and go to work. At noon when the bell rang, lunch, and at 6pm when the bell rang again the family would gather and share dinner together.