Silverstripe version 2.4.7, my locale is set to italian (i18n::set_locale('it_IT')), i have an SS_Datetime field that worked regularly until today.
Today, entering 23/05/2013, the field don't validate with the error "Please enter a valid date format (dd/MM/yyyy)", but if i enter 22/05/2013 or 24/05/2013, the field validate. If i enter 23/05/2014 the field don't validate with the same error.
Who is against May 23? :)
No one has any idea where can be the problem?