Lisbon is 6 hours ahead of Chicago. When it's 9:00 AM in Chicago, it's 3:00 PM in Lisbon. Both cities observe DST, maintaining the 6-hour difference year-round.
Chicago uses CT (Central Time) while Lisbon uses WET/WEST.
Optimal window: 8:00 AM - 12:00 PM Chicago time (2:00 PM - 6:00 PM Lisbon). Morning calls from Chicago reach afternoon business hours in Lisbon.
Lisbon's growing tech startup scene attracts interest from Chicago investors.