AKST to IRST Time Converter
IRST is 11 hours and 30 minutes ahead of AKST. Alaska is currently on AKDT (UTC-8:00), and IRST is UTC+3:30.
Best Time to Call Between AKST and IRST
Standard 9-to-5 hours in these two zones never overlap, so someone has to take the call outside their working day. The most workable window is 7:00 AM to 11:00 AM AKST, which is 6:30 PM to 10:30 PM IRST.
both at work AKST only IRST only neither — hours along the strip are AKST.
Common Times Converted
AKST on the left, IRST on the right.
AKST to IRST: Full 24-Hour Conversion Table
Shaded rows are working hours; the darker shade marks the hours when both zones are at work.
| AKST | IRST | Working hours |
|---|---|---|
| 12:00 AM | 11:30 AM | IRST only |
| 1:00 AM | 12:30 PM | IRST only |
| 2:00 AM | 1:30 PM | IRST only |
| 3:00 AM | 2:30 PM | IRST only |
| 4:00 AM | 3:30 PM | IRST only |
| 5:00 AM | 4:30 PM | IRST only |
| 6:00 AM | 5:30 PM | — |
| 7:00 AM | 6:30 PM | — |
| 8:00 AM | 7:30 PM | — |
| 9:00 AM | 8:30 PM | AKST only |
| 10:00 AM | 9:30 PM | AKST only |
| 11:00 AM | 10:30 PM | AKST only |
| 12:00 PM | 11:30 PM | AKST only |
| 1:00 PM | 12:30 AM next day | AKST only |
| 2:00 PM | 1:30 AM next day | AKST only |
| 3:00 PM | 2:30 AM next day | AKST only |
| 4:00 PM | 3:30 AM next day | AKST only |
| 5:00 PM | 4:30 AM next day | — |
| 6:00 PM | 5:30 AM next day | — |
| 7:00 PM | 6:30 AM next day | — |
| 8:00 PM | 7:30 AM next day | — |
| 9:00 PM | 8:30 AM next day | — |
| 10:00 PM | 9:30 AM next day | IRST only |
| 11:00 PM | 10:30 AM next day | IRST only |
What AKST and IRST Actually Are
AKST — Alaska Standard Time
Anchorage, Fairbanks, Juneau. Standing at UTC-9:00 as written, and the region does change its clocks, so its live offset moves by an hour twice a year. The next change is on Sunday, November 1, 2026, to AKST.
Alaska compressed four time zones into one in 1983, moving most of the state onto a single clock to keep business hours aligned with the rest of the country.
IRST — Iran Standard Time
Tehran, Mashhad, Isfahan. Standing at UTC+3:30 as written, and the region does not change its clocks, so that offset holds all year. Iran abolished daylight saving in 2022, so the half-hour offset now holds all year.
Iran abolished daylight saving in 2022. Its half-hour offset is a deliberate compromise between the solar times of its western and eastern borders.
What This Means in Practice
Expect times on the half hour
IRST sits on a 30-minute offset rather than a whole hour, so a round number on one side is never a round number on the other. A 9:00 meeting becomes 30 minutes past the hour, which is exactly the detail calendar invitations get wrong when someone converts in their head.
The date changes mid-working-day
For 4 of the eight hours in a normal AKST working day, the equivalent IRST time falls on a different calendar date. Anything scheduled in that stretch needs the date checked as well as the time, or a Tuesday call quietly becomes a Wednesday one at the other end.
This gap is not fixed
AKST changes its clocks and IRST does not, so the difference between them moves by an hour twice a year. A recurring meeting set now will drift for one side from Sunday, November 1, 2026 unless someone resets it.
Nearly opposite sides of the clock
At 11 hours and 30 minutes apart, one side's morning is the other side's night. Handing work over at the end of a shift usually beats trying to get both parties in the same call.
Major Cities in Each Zone
Cities on AKST
Cities on IRST
Frequently Asked Questions
What is the time difference between AKST and IRST?
IRST is 11 hours and 30 minutes ahead of AKST. That is the live figure. Taken strictly as written, the gap between AKST and IRST is 12 hours and 30 minutes — the two differ because at least one of these regions is currently on daylight saving.
What is 9:00 AM AKST in IRST?
9:00 AM AKST is 8:30 PM IRST.
What are the best hours to schedule a call between AKST and IRST?
Standard business hours in these two zones do not overlap at all, so one side has to work outside the 9-to-5. The most workable window is 7:00 AM to 11:00 AM AKST, which is 6:30 PM to 10:30 PM IRST.
Does the difference between AKST and IRST change during the year?
Yes. AKST observes daylight saving and IRST does not, so the gap shifts by an hour at least twice a year. The next clock change is on Sunday, November 1, 2026.
Does IRST always mean Iran Standard Time?
Iran abolished daylight saving in 2022, so the half-hour offset now holds all year.