IRST — Iran Standard Time

How to Convert IRST to Other Time Zones

1. Open the IRST converter page: Visit https://www.xconvert.com/time-converter/irst-time-zone to open the visual comparison grid with IRST pre-loaded. This view is useful when you need to line up Iran Standard Time with another region for a business call, travel itinerary, or remote team handoff without manually calculating its UTC+3:30 offset.

2. Add comparison cities: Click + Add City and search for the places you want to compare against IRST. This is especially helpful if you are coordinating meetings across multiple offices or checking whether a support, logistics, or partner team in another market overlaps with working hours shown in the grid’s green blocks.

3. Select a time range on the grid: Click Select, then drag across the IRST row to highlight the hours you want to compare; the selected range appears in purple, and you can adjust it with the left and right handles or move it by dragging the center. For example, if you want to test whether an IRST morning or afternoon slot overlaps with another team’s workday, the side-by-side rows immediately show whether that window lands in their green work hours, yellow evening hours, or gray night hours.

4. Export and share the result: After selecting a range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is practical when you need to send a confirmed meeting window to clients, recruiters, vendors, or distributed colleagues so everyone receives the same time block in their local calendar context.

About Iran Standard Time (IRST)

IRST stands for Iran Standard Time. Its exact offset is UTC+3:30, which makes it one of the time standards that uses a half-hour offset rather than a whole-hour difference from Coordinated Universal Time.

Iran Standard Time does not observe daylight saving time. It also has no counterpart, so there is no alternate seasonal abbreviation used during part of the year.

IRST and Daylight Saving Time

IRST does not observe DST. That means it does not switch to a summer time abbreviation and there are no daylight saving transition dates to track during the current year.

This fixed behavior is useful for scheduling because the offset remains UTC+3:30 throughout the year. If you are planning recurring meetings, reporting deadlines, or travel coordination around IRST, you do not need to account for a seasonal clock change within IRST itself.

Frequently Asked Questions

What does IRST stand for?

IRST stands for Iran Standard Time. It is the standard time designation associated with a fixed offset of UTC+3:30.

Is IRST the same as GMT?

No. IRST is UTC+3:30, while GMT is at UTC+0:00, so they are not the same time standard and do not share the same offset.

Which cities use IRST?

Specific city listings are not included here. The key point for conversion is that IRST refers to Iran Standard Time with a fixed UTC+3:30 offset.

What is the UTC offset for IRST?

The UTC offset for IRST is UTC+3:30. This half-hour offset stays the same year-round because IRST does not use daylight saving time.

When does IRST change for daylight saving time?

IRST does not change for daylight saving time. There is no seasonal switch, no summer counterpart abbreviation, and no annual transition date to monitor.

Does IRST have a daylight saving counterpart?

No. IRST has no counterpart. It remains Iran Standard Time throughout the year instead of alternating between standard time and a daylight time version.

Is IRST a fixed time zone throughout the year?

Yes. IRST is fixed at UTC+3:30 all year because it does not observe DST. That makes recurring scheduling simpler since the local IRST offset does not shift seasonally.