Google+ Events in Google Calendar
Google+ offers a new way to create, capture and share public and private events. Google+ Events are seamlessly integrated with Google Calendar to simplify the planning process, so you’ll always know when you have something coming up.
When creating a Google+ event, you can check your Google Calendar to make sure you pick the best time to organize a meeting. Google+ events is also synchronized to your mobile device’s calendar, so you can easily check upcoming events.
In week and day views in Calendar, you’ll recognize Google+ Events by the event owner’s profile picture. When you click to expand the event in Calendar, it displays a theme and allows you to set reminders, see other guests, and directly join the event.