We've just released an enhancement on the global calendar that adds the project name next to every event and task. This helps you quickly decipher which project each item is associated with. Before this update, you had to click on an event to see which project it belonged to. This feature was based off the feedback and votes we received on our suggestion forum. Here is an example of how it looks on the calendar - it shows the event with the project name in parentheses after the description.
This online project management calendar enhancement provides the necessary functionality in a clear, clean, and simple way.