Tokyo is 8 hours ahead of Zurich during Central European Time (or 7 hours during CEST). Zurich uses Central European Time (CET/CEST, UTC+1/+2) while Tokyo uses Japan Standard Time (JST, UTC+9). When it's 12:00 PM in Zurich, it's 8:00 PM in Tokyo (or 7:00 PM during Zurich's daylight saving time).
Zurich observes daylight saving time while Japan does not. This means the difference varies between 7 and 8 hours throughout the year.
Best calling time: 8:00 AM - 10:00 AM Zurich time. This corresponds to 4:00 PM - 6:00 PM in Tokyo (during CET), catching late afternoon business hours in Japan.
Zurich and Tokyo are both major global financial centers. Swiss companies have strong business relationships with Japanese firms in pharmaceuticals, precision engineering, and finance. Swiss watches are highly valued in Japan. Early morning calls from Zurich can reach Tokyo's afternoon hours.