Lisbon is typically 3 hours ahead of Rio de Janeiro. When it's 10:00 AM in Rio de Janeiro, it's 1:00 PM in Lisbon. However, this can vary to 4 hours during certain periods due to daylight saving time differences.
Brazil suspended daylight saving time in 2019, while Portugal follows EU daylight saving rules. This shared Portuguese language heritage makes business and cultural connections between these cities common, despite the time difference.
Optimal meeting window: 9:00 AM - 2:00 PM Rio time (12:00 PM - 5:00 PM Lisbon). This catches afternoon business hours in Lisbon while being morning to early afternoon in Rio.
For early morning meetings in Lisbon (9:00 AM), Rio would need to start at 6:00 AM, which may be too early for most business calls.