Reykjavik to Havana Time

Reykjavik (Iceland) is a small but highly connected Nordic island economy, with key industries in fishing, geothermal energy, tourism, and aluminum smelting. Havana (Cuba) is a Caribbean economy undergoing gradual economic opening, known for tourism, biotechnology, agriculture (sugar, tobacco), and nickel. With a 5-hour time difference, professionals frequently schedule cross-border calls between these two cities for international trade, remote team collaboration, and client meetings.

Scheduling Meetings Between Reykjavik and Havana

The 5-hour difference between Reykjavik and Havana requires careful scheduling. The best overlap window is typically 2–4 hours when both cities are within working hours. Icelandic business hours are typically 9 AM–5 PM, with one of the world's highest internet penetration rates. Cuban business hours are typically 8 AM–5 PM, with a well-educated workforce and growing private sector. Teams often designate specific "overlap hours" for real-time collaboration and use asynchronous communication (Slack, email, recorded video) for the rest of the day.

Daylight Saving Time Considerations

Havana observes Daylight Saving Time (CST/CDT), while Reykjavik stays on GMT year-round. When Havana switches to daylight time, the effective time difference shifts by 1 hour. This typically happens in spring and fall, and the exact dates vary by country. If you have recurring cross-timezone meetings, recalculate the schedule after each DST transition.

Collaboration Tools & Workflow

The 5-hour gap between Reykjavik and Havana means teams get roughly half a day of overlapping work hours. Successful cross-timezone teams typically batch synchronous activities (standups, reviews, planning) into the overlap window and reserve solo deep work for non-overlapping hours. Tools like Loom for async video updates, Slack with status indicators showing each team's local time, and shared Notion docs help bridge the gap. Many teams adopt a "follow-the-sun" workflow where handoffs happen at the edges of each team's workday.

Remote Work Between Reykjavik & Havana

Reykjavik, a key city in Iceland, and Havana, a key city in Cuba, represent a common corridor for distributed teams navigating a 5-hour time difference. Remote workers and freelancers operating between these cities should plan their day around the overlap window — typically the late morning for one city and early morning or late afternoon for the other. Using a world clock widget, setting Slack status with local time, and blocking "no-meeting" deep work hours outside the overlap are essential practices for productive cross-timezone remote collaboration between Reykjavik and Havana.

GMT (GMT) stands for the timezone used in Reykjavik, Iceland (UTC+0). CST (CST/CDT) is the timezone used in Havana, Cuba (UTC-5). Reykjavik is 5 hours ahead of Havana.

To convert GMT to CST, subtract 5 hours from GMT time. For example, GMT 9:00 AM = CST 4:00 AM.