When you go to the main page at cscs-archive, you have the option of two different calendars. There is a small calendar which is available for general purpose viewing and shows the important announcements for the day. To know the schedule for the day, just hover your mouse over the desired day and a pop up will show the details. Alternately, you can also click on the day and see all the events scheduled for the day.
The calendar has been designed to incorporate in it, all the announcements and news published on the site. Once you have logged in, you can also use a different calendar view. On your HOME page, scroll down in the left hand navigation tree and click on the link titled DETAILED CALENDAR. Depending upon your permissions, you will see the things that are relevant to you. You can also add and delete events depending on your access rights.