If you want to add this calendar to your diary, click on the Google Calendar button at the bottom right of the calendar.
If you're seeing an error message that this page can't be displayed, there are several options (1 and 2 preferred) to bypass the IE cookies and Google Mail / Calendar conflict(s):
If you are a gmail user, please sign out of your email account and refresh (F5)-- Calendar will be visible then;
Use Internet Explorer (IE) In Private Browsing: Ctrl+Shift+P --> type in URL ( vk6.net );
Add google.com to IE: Tools --> Internet Options --> Privacy --> Sites --> Type "google.com" --> Allow --> F5 (refresh).