We have been made aware that some users are seeing only a blank page and not the nice calendar display.
This only impacts iPad/iPhone users on an older iOS version, or users of Internet Explorer
If you are an iPad/iPhone user: Please update your iOS to a current version. (Settings -> General -> Software Update)
If you are a Windows 7 user: Please use the Chrome or Firefox browser. Internet Explorer does not properly handle this calendar. (The new Edge browser in Windows 10 is fine.)
We apologize for any inconvenience.