Tehran to Los Angeles Time

Tehran (Iran) is an important regional economy, with key industries in diverse sectors including services and trade. Los Angeles (United States) is a global financial and tech hub, known for technology, finance, healthcare, and entertainment. With a 11.5-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 Los Angeles

With Los Angeles 11.5 hours behind Tehran, there is minimal overlap in standard business hours. Most teams alternate meeting times to share the burden of early-morning or late-evening calls fairly. Business hours typically follow a 9 AM–5 PM schedule. US business hours typically run 9 AM–5 PM, with a culture that values punctuality and efficiency. Consider recording meetings for those who can't attend live, and use shared documents for async collaboration.

Daylight Saving Time Considerations

Both Tehran and Los Angeles observe Daylight Saving Time. Tehran uses IRST/IRDT (switching between standard and daylight time), while Los Angeles uses PST/PDT. If their DST transitions happen on different dates — which is common, as the US, EU, and other regions change clocks on different weekends — the effective time difference between the two cities can shift by 1 hour for several weeks. Always double-check the actual offset during March–April and October–November.

IRST (IRST/IRDT) stands for the timezone used in Tehran, Iran (UTC+3:30). PST (PST/PDT) is the timezone used in Los Angeles, United States (UTC-8). Tehran is 11 hours and 30 minutes ahead of Los Angeles.

To convert IRST to PST, subtract 11.5 hours from IRST time. For example, IRST 9:00 AM = PST 9:30 PM (previous day).