Vienna and Zurich are on the same time. Both cities use Central European Time (CET/CEST, UTC+1/+2). When it's 12:00 PM in Vienna, it's also 12:00 PM in Zurich.
Both cities observe daylight saving time on the same schedule, keeping them synchronized year-round.
Any time works! Since both cities share the same time zone, you can call during normal business hours (9:00 AM - 6:00 PM) without any conversion needed.
Vienna and Zurich are both German-speaking financial and cultural centers. The train journey takes about 8 hours through scenic Alpine routes, while flights take just 1 hour.