bug#8356: date bug

[Fulvio Donazzolo]

$ date -d "02:50"
date: invalid date `02:50'


$ date -d "01:50"
Sun Mar 27 01:50:00 CET 2011

$ date -d "03:50"
Sun Mar 27 03:50:00 CEST 2011

bug only with "02:XX"