Olives are a fruit that can be eaten at any time, but there are some things to consider when deciding when to eat them. If you are eating olives as a snack, it is best to eat them with other foods so that you do not overeat. Olives can also be used as an ingredient in recipes, such as olive oil and tapenade. The best time to use olives in recipes is when they are in season, which is typically from October to May.