Ken,
The navigation is a bit hidden.
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Right-click anywhere in the calendar.
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Click on “Go to Date” in the context menu.
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Click on the little drop down symbol next to the shown date.
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Now you can navigate through the months, or click on the month/year at the top to navigate through the years, or click on the year at the top to navigate through decades, then even centuries.
That should do, I suppose. 