Seattle is typically 9 hours behind Amsterdam. When it's 5:00 PM in Amsterdam, it's 8:00 AM in Seattle. Both cities observe daylight saving time, though the transition dates differ slightly.
During the brief periods when the US and Europe change clocks on different weekends (usually in March and November), the difference can temporarily be 8 or 10 hours. For most of the year, it's a consistent 9-hour difference.
Optimal meeting window: 7:00 AM - 9:00 AM Seattle time (4:00 PM - 6:00 PM Amsterdam). This catches late afternoon business hours in Amsterdam while being early morning in Seattle.
Seattle's tech sector frequently coordinates with Dutch companies in finance and logistics during this window.