Google Calendar's Time Insights feature provides a detailed breakdown of how users are spending their time during the week, helping them identify areas for improvement and optimize their productivity. The feature allows users to see how much time is spent in meetings, one-on-one sessions, and other events, as well as who they are interacting with most. By setting up working hours and pinning key individuals, users can gain valuable insights into their schedule and make data-driven decisions about how to manage their time more effectively.