Google has released a statement declaring their calendar issues to be fully resolved.
"The problem with Google Calendar should be resolved. We apologize for the inconvenience and thank you for your patience and continued support. Please rest assured that system reliability is a top priority at Google, and we are making continuous improvements to make our systems better." - Google
For further details, please visit https://www.google.com/appsstatus#hl=en&v=status
If you are experiencing further issues with Google Calendar, please contact us at firstname.lastname@example.org or 650-454-8850