Ottawa is 6 hours behind Budapest
Best overlap: 2:00 PM to 6:00 PM in Budapest is 8:00 AM to 12:00 PM in Ottawa.
The hours that work for both Budapest and Ottawa are 2:00 PM to 6:00 PM (Budapest) and 8:00 AM to 12:00 PM (Ottawa). The shared window is roughly 4 hours; treat its midpoint as the default and you'll keep both teams happy.