Bucharest is 1 hour ahead of Vienna. Bucharest uses Eastern European Time (EET/EEST) while Vienna uses Central European Time (CET/CEST). When it's 10:00 AM in Bucharest, it's 9:00 AM in Vienna.
Both cities observe daylight saving time on the same EU schedule, so the 1-hour difference remains constant year-round.
Best calling time: 9:00 AM - 5:00 PM Bucharest time. This corresponds to 8:00 AM - 4:00 PM in Vienna, providing excellent overlap for business calls.
Bucharest and Vienna have historical ties from the Austro-Hungarian era. Austria is a significant investor in Romania, and direct flights connect the cities in about 1.5 hours.