Calendar - Get start and end date of current view

[erobles]

Hi,
I'm using SmartGWT 2.4 and it is not clear from the API of the calendar how to obtain the startDate and endDate currently shown in the Calendar.

For instance if I'm in the Day view on May 11th
Start date: May 11 00:00:00
End date: May 11 23:59:59

The same for week and month.
Do you have any clues?
Thanks
Esteban