Convert AKST to IRST
IRST is 12 hours 30 minutes ahead of AKST. AKST is UTC−9 and IRST is UTC+3:30.
Right now: AKST · IRST
Best time to schedule a meeting
Standard 9–5 working hours do not overlap at all between AKST and IRST. Someone has to take an early or late call — or use asynchronous communication instead.
| AKST | IRST | Suitable? |
|---|---|---|
| 9:00 AM | 9:30 PM | outside 9–5 |
| 10:00 AM | 10:30 PM | outside 9–5 |
| 11:00 AM | 11:30 PM | outside 9–5 |
| 12:00 PM | 12:30 AM (next day) | outside 9–5 |
| 1:00 PM | 1:30 AM (next day) | outside 9–5 |
| 2:00 PM | 2:30 AM (next day) | outside 9–5 |
| 3:00 PM | 3:30 AM (next day) | outside 9–5 |
| 4:00 PM | 4:30 AM (next day) | outside 9–5 |
| 5:00 PM | 5:30 AM (next day) | outside 9–5 |
AKST to IRST conversion table
| AKST | IRST |
|---|---|
| 12:00 AM | 12:30 PM |
| 1:00 AM | 1:30 PM |
| 2:00 AM | 2:30 PM |
| 3:00 AM | 3:30 PM |
| 4:00 AM | 4:30 PM |
| 5:00 AM | 5:30 PM |
| 6:00 AM | 6:30 PM |
| 7:00 AM | 7:30 PM |
| 8:00 AM | 8:30 PM |
| 9:00 AM | 9:30 PM |
| 10:00 AM | 10:30 PM |
| 11:00 AM | 11:30 PM |
| 12:00 PM | 12:30 AM (next day) |
| 1:00 PM | 1:30 AM (next day) |
| 2:00 PM | 2:30 AM (next day) |
| 3:00 PM | 3:30 AM (next day) |
| 4:00 PM | 4:30 AM (next day) |
| 5:00 PM | 5:30 AM (next day) |
| 6:00 PM | 6:30 AM (next day) |
| 7:00 PM | 7:30 AM (next day) |
| 8:00 PM | 8:30 AM (next day) |
| 9:00 PM | 9:30 AM (next day) |
| 10:00 PM | 10:30 AM (next day) |
| 11:00 PM | 11:30 AM (next day) |
About AKST
Alaska Standard Time (AKST) is UTC−9. It is used in Anchorage and the rest of Alaska in winter.
Alaska Standard Time is UTC−9, one hour behind Pacific Standard Time. Alaska observes daylight saving on the US schedule, moving to AKDT at UTC−8 in summer. The state is wide enough to span four time zones geographically and chooses to run on one for practical reasons, which is why the sun can rise at very different clock times at either end of it.
About IRST
Iran Standard Time (IRST) is UTC+3:30. It is used in Iran, all year.
Iran Standard Time is UTC+3:30. Iran ran daylight saving for decades and stopped in 2022, so material written before then puts the country half an hour further ahead in summer and is now wrong. Half-hour offsets are rare enough that scheduling tools sometimes round them, which turns a correct calculation into a thirty-minute error.
Does this gap change with the seasons?
Neither AKST nor IRST shifts with the seasons, so this 12.5-hour difference holds all year. That is unusual enough to be worth relying on: most cross-continental gaps move twice a year.
This is the reason scheduling systems store an IANA zone such as Region/City rather than an offset or an abbreviation: the zone knows its own rules and the offset does not.
Frequently asked questions
What time is 9:00 AM AKST in IRST?
9:00 AM AKST is 9:30 PM IRST.
Is IRST ahead of AKST?
IRST is 12 hours 30 minutes ahead of AKST.
Which time zone does this use?
AKST is UTC−9 and IRST is UTC+3:30. Both abbreviations denote a single fixed offset, so this conversion never shifts with daylight saving — what changes is which abbreviation a place is using at the time.