Karachi is 8 hours ahead of Rio de Janeiro
Best overlap: 8:00 AM to 10:00 AM in Rio de Janeiro is 4:00 PM to 6:00 PM in Karachi.
Your window to reach both cities is 8:00 AM to 10:00 AM in Rio de Janeiro, which converts to 4:00 PM to 6:00 PM in Karachi. Karachi is 8 hours ahead of Rio de Janeiro, leaving a tight 2-hour window. Book 8:00 AM in Rio de Janeiro (4:00 PM in Karachi) early and you'll dodge the daily scramble.