As initially announced in November 2011, and reiterated in June of this year, the older versions (v1, v2) of the Google Calendar API will be shut down on November 17, 2014.
Any service dependent on v1 or v2 of the Google Calendar API will no longer work as intended. Developers should ensure any relevant services are utilizing v3 of the Google Calendar API prior to the shut down.
Note: all launches are applicable to all Google Apps editions unless otherwise noted
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