I have the HTC Desire, no problems with my Calendar. Never seen that problem before. Have you thought about trying one of the alternative calendars from the Android Market? That may be better for you, if the problem persists, till you sort it out.
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation technologies coming to Siggraph 2017
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Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.