Seattle is typically 16 hours behind Singapore. When it's 11:00 PM in Singapore, it's 7:00 AM in Seattle. Singapore does not observe daylight saving time, but Seattle does.
During US daylight saving time (March to November), the difference is 15 hours. During US standard time (November to March), the difference increases to 16 hours.
Optimal meeting window: 5:00 AM - 7:00 AM Seattle time (8:00 PM - 10:00 PM Singapore, or 9:00 PM - 11:00 PM in winter). Very early morning Seattle catches evening Singapore.
Seattle's tech giants maintain significant operations in Singapore, requiring coordination across this challenging time difference.