Singapore is 7 hours ahead of Zurich during Central European Time (or 6 hours during CEST). Zurich uses Central European Time (CET/CEST, UTC+1/+2) while Singapore uses Singapore Standard Time (SGT, UTC+8). When it's 12:00 PM in Zurich, it's 7:00 PM in Singapore (or 6:00 PM during Zurich's daylight saving time).
Zurich observes daylight saving time while Singapore does not. This means the difference varies between 6 and 7 hours throughout the year.
Best calling time: 8:00 AM - 11:00 AM Zurich time. This corresponds to 3:00 PM - 6:00 PM in Singapore (during CET), catching afternoon business hours in Singapore.
Zurich and Singapore are both major global wealth management centers. Many Swiss banks have significant operations in Singapore, and both cities compete for international private banking business. Morning calls from Zurich reach Singapore in the late afternoon.