Hi Guilherme,
The date format has no effects on year range. Widget date has an attribute, called year_range which for that birthday field in addressbook is set to year_range=“c-90:c+2”, and if you don’t have custom template which may overridden that year_range default value or removing it, you should get 90 years in the past from the initial date (selected date on date widget).
If the explained possible custom template is not your case, for having more past years available in year selection, you can select the year 2007 then click again on year selection which brings more past years as options then depends on year_range set for the widget you need to repeat this action till you reach the desired year. e.g. for selecting year 1980, assuming the year_range is set to “c-20:c+2” which means past 20 years and 2 years in future from initiated year, first select last available year (assuming the last year in the selectbox is 2007) then click again on year selection which will have years from 2009 - 1987, so we need to repeat this action one more time to get the range from 1989 - 1967.
Hopefully this helps you.
Best regards,
