Widget present information about:
1. Day of month.
2. Name of month.
3. Number day of year.
4. Number day to end year.
5. Number week of year.
To see the widget running on the home screen, add the widget there:
Press the Back key (in the upper-right corner of the emulator device) to return to the home screen (showing a watch face).
Swipe the home screen right until you see + Add widget. Select it.
Swipe right until you see your widget application. Select it.
More informations about widgets: https://www.youtube.com/watch?v=PTfne3rOF6g