Convert IRST to +1345 — Time Difference Between Iran Standard Time and Chatham

How to Convert IRST to +1345

Drag the slider on the IRST timeline to pick your time — the +1345 time updates instantly. You can also click the time display to type a specific hour or pick one from the 15-minute interval dropdown, and use the date picker to check a different day.

What Is the Time Difference Between IRST and +1345?

Chatham (+1345) is 10:15 hours ahead of Iran Standard Time (IRST). To convert, add 10:15 hours — for example, 9:00 AM IRST is 7:15 PM +1345.

IRST to +1345 Quick Reference

IRST to +1345 Meeting Planner

Use the color-coded table above to find overlapping work hours between Tehran and Chatham. Amber rows mark daytime hours — pick a slot that falls in amber on both sides for a meeting that works for everyone.

Why Trust This IRST to +1345 Converter?

Timezoney uses the IANA Time Zone Database — the same source that powers your phone and computer — so every conversion handles daylight saving transitions and half-hour offsets automatically.