Changing device timezone causing calendar to display month dates or wrong month

[hilfritz]

Here is the steps to reproduce this bug using the library Sample app.

1. Set device timezone to GMT-11:00 (Sample app must not be running yet)
2. Open the Basic Example app from the sample. The calendars should show correctly.
   By the time of this writing Dec has dates from 1-31, Jan 1-31, Feb 1-28, Mar 1-31.
3. Click back and make sure you are on the first page of the sample app.
4. Change device timezone to GMT-7:00.
5. Go back to the Sample app .
6. Open the Basic Example app. The dates should not be correct anymore.

The month displayed at the top and the month displayed you click a date are not the same.
It does not look like Dec has dates from 1-31, Jan 1-31, Feb 1-28, Mar 1-31 from step#2.