Calendar
Subscribing to the calendar pulls the events from the calendar and displays them in your Outlook, Gmail, Yahoo Mail, Hotmail, iPhone, iPad, Android, or other device.
Click the +GoogleCalendar button at the bottom right. Follow the prompts from your calendar program to finalize your subscription. Once you have subscribed your calendar program will periodically refresh and get the latest updates from this calendar. The calendar refresh time will depend on the program you are using. Most calendars refresh every 4-24 hours.