Calendars can provide you with an easy way to keep track of important events and allow you to set alarms which will remind you when those events are due. For example you can create calendar events for things such as meetings, an anniversary or a friends birthday. If the events occur regularly you can create a single event that repeats. For example an anniversary event that repeats on the same date each year. You may also share your calendar with other users on your system, allowing them view your schedule and depending on their access rights add or delete entries.