Rated 5 out of 5 stars
This is very very helpful in daily life.
But there is a little bug: choose any tab. The tab is highlighted by the date being bold.
Now go to the minicalendar in the top left, choose a month last year. This is displayed in the current tab. OK, but now we show no longer january 2017, so the tab should no longer be marked in bold (it is not selected).