Tehran to Dili Time

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

The 5.5-hour difference between Tehran and Dili requires careful scheduling. The best overlap window is typically 2–4 hours when both cities are within working hours. Iranian business hours are typically 8 AM–4 PM Saturday–Wednesday, with Thursday as a half-day and Friday off. Timorese business hours are typically 8 AM–5 PM, with Dili as the business center. 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), but Dili does not — it stays on TLT year-round. This means the time difference between Tehran and Dili changes by 1 hour when Tehran switches clocks. During Iran's summer, the gap is 4.5–6.5 hours instead of the standard 5.5 hours. Mark DST transition dates on your calendar to avoid missed meetings.

Collaboration Tools & Workflow

The 5.5-hour gap between Tehran and Dili 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 Tehran & Dili

Tehran, a key city in Iran, and Dili, a key city in Timor-Leste, 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 Tehran and Dili.

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

To convert IRST to TLT, add 5.5 hours to IRST time. For example, IRST 9:00 AM = TLT 2:30 PM.