Dili to Tehran Time

Dili (Timor-Leste) is a young Southeast Asian nation with oil and gas revenues, with key industries in oil and gas, coffee, agriculture, and tourism. Tehran (Iran) is one of the Middle East's largest economies with a young population, known for oil and gas, petrochemicals, automotive, and agriculture. With a 5.5-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 Dili and Tehran

The 5.5-hour difference between Dili and Tehran requires careful scheduling. The best overlap window is typically 2–4 hours when both cities are within working hours. Timorese business hours are typically 8 AM–5 PM, with Dili as the business center. Iranian business hours are typically 8 AM–4 PM Saturday–Wednesday, with Thursday as a half-day and Friday off. 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

Tehran observes Daylight Saving Time (IRST/IRDT), while Dili stays on TLT year-round. When Tehran 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 5.5-hour gap between Dili and Tehran 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 Dili & Tehran

Dili, a key city in Timor-Leste, and Tehran, a key city in Iran, represent a common corridor for distributed teams navigating a 5.5-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 Dili and Tehran.

TLT (TLT) stands for the timezone used in Dili, Timor-Leste (UTC+9). IRST (IRST/IRDT) is the timezone used in Tehran, Iran (UTC+3:30). Dili is 5 hours and 30 minutes ahead of Tehran.

To convert TLT to IRST, subtract 5.5 hours from TLT time. For example, TLT 9:00 AM = IRST 3:30 AM.