IRKT — Irkutsk Time
See what IRKT means, where it is used, its UTC+8 offset, and how to compare or convert it with other time zones.
How to Convert IRKT to Other Time Zones
Open the IRKT converter page: Go to https://www.xconvert.com/time-converter/irkt-time-zone to load the visual comparison grid with Irkutsk Time (IRKT) as the reference row. This page is useful when you need to line up working hours in eastern Siberia with another market, such as scheduling a supplier call, coordinating a remote engineering handoff, or checking whether a support shift overlaps with Asia-Pacific business hours.
Add comparison cities: Click + Add City and search for cities that commonly interact with UTC+8 regions, such as Singapore, Hong Kong, or Perth. These are practical comparisons because Singapore and Hong Kong are major finance and shipping hubs on UTC+8, while Perth also uses UTC+8 year-round, making it easy to see whether a meeting in Irkutsk aligns with mining, logistics, commodities, or regional trade operations.
Select a time range on the grid: Click Select if needed, then drag across the IRKT row to highlight a work window such as 9:00 AM to 11:00 AM IRKT. Because IRKT is UTC+8, that same range appears as 9:00 AM to 11:00 AM in Singapore and Hong Kong and 9:00 AM to 11:00 AM in Perth, which immediately shows that these same-offset locations can coordinate calls without any hour difference or seasonal adjustment.
Export or share the result: Once the purple selection is visible, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is especially useful if you want to send a calendar-ready meeting block to partners across multiple UTC+8 cities so everyone sees the correct local time automatically, without manually converting from Irkutsk Time.
About Irkutsk Time (IRKT)
IRKT stands for Irkutsk Time, the standard time used in the Irkutsk Oblast region of Russia and nearby parts of eastern Siberia. Its exact offset is UTC+8:00, which means local time in IRKT is 8 hours ahead of Coordinated Universal Time (UTC) at all times of the year.
In practical terms, when it is 12:00 noon UTC, it is 8:00 PM IRKT. This makes IRKT one of Russia’s eastern time zones and places it in the same nominal UTC offset as several major Asia-Pacific time zones, including Singapore Time (SGT), Hong Kong Time (HKT), Philippine Time (PHT), Malaysia Time (MYT), Australian Western Standard Time (AWST), and Brunei Time (BNT).
The time zone is named after Irkutsk, one of Siberia’s best-known cities and a major gateway to Lake Baikal, the world’s deepest freshwater lake. Irkutsk itself has a population of roughly 600,000+ people, and the broader region is important for transport, energy, raw materials, rail logistics, and tourism, especially because it sits along routes connected to the Trans-Siberian Railway and eastern Russian trade corridors.
Because IRKT shares UTC+8 with many commercial centers in Asia, it can be convenient for cross-border coordination. For example, 9:00 AM IRKT is also 9:00 AM in Singapore, Hong Kong, Manila, Kuala Lumpur, and Perth, which simplifies scheduling for shipping, procurement, customer support coverage, and regional operations that span Siberia and Southeast Asia.
IRKT and Daylight Saving Time
Irkutsk Time does not currently observe daylight saving time. The DST status for IRKT is false, which means the offset remains fixed at UTC+8:00 throughout the entire year and does not shift forward in spring or backward in autumn.
For the current year, 2026, there are no DST transition dates for IRKT. It does not switch to a summer time, it does not switch to a winter time, and there are no clock changes on any date in 2026 for regions using Irkutsk Time.
This fixed offset is useful for planning recurring meetings because the IRKT side stays stable even when other countries change clocks seasonally. For example, when Europe enters daylight saving time on 29 March 2026 and leaves it on 25 October 2026, or when parts of North America switch on 8 March 2026 and 1 November 2026, IRKT remains unchanged at UTC+8, so the time difference changes only on the other side.
That stability matters for businesses with recurring calls. A weekly meeting between Irkutsk and London will shift by one hour relative to UK local time when the UK moves between GMT (UTC+0) and BST (UTC+1), but the Irkutsk clock itself never changes. The same pattern applies when coordinating with New York, Toronto, or other DST-observing cities.
Frequently Asked Questions
What does IRKT stand for?
IRKT stands for Irkutsk Time. It is the standard time designation used for the Irkutsk region of Russia, and it represents a fixed time offset of UTC+8:00.
The abbreviation is commonly used in world clock tools, scheduling systems, and international time conversion references. If you are planning a meeting or comparing time zones, IRKT tells you that the local time is always eight hours ahead of UTC.
Is IRKT the same as GMT?
No, IRKT is not the same as GMT. Greenwich Mean Time (GMT) is UTC+0, while Irkutsk Time (IRKT) is UTC+8, so IRKT is 8 hours ahead of GMT.
For example, when it is 9:00 AM GMT, it is 5:00 PM IRKT on the same day. This difference is significant for business scheduling, especially when coordinating between Russia and Europe or Africa, where many countries use UTC+0 or UTC+1.
Which cities use IRKT?
The principal city associated with IRKT is Irkutsk, the administrative center of Irkutsk Oblast in Siberia. Other localities in the same regional time system are in eastern Siberia, but Irkutsk is the main city most people reference when discussing this time zone internationally.
Irkutsk is an important transport and tourism hub because of its proximity to Lake Baikal and its role on the Trans-Siberian Railway. If you see IRKT in a scheduling tool, the city most commonly implied is Irkutsk.
What is the UTC offset for IRKT?
The exact UTC offset for IRKT is UTC+8:00. That means you add 8 hours to UTC to get Irkutsk Time.
A simple example: if the current time is 14:00 UTC, the time in IRKT is 22:00. This fixed offset makes IRKT easy to compare with other UTC+8 zones such as Singapore, Hong Kong, and Perth, especially because there is no daylight saving change to account for.
When does IRKT change?
IRKT does not currently change during the year. There is no daylight saving time, so the clocks do not move forward or backward in spring or autumn.
In 2026, there are no official transition dates for IRKT because the zone remains on UTC+8:00 for all 12 months. If you notice a changing time difference between Irkutsk and another city, that change is usually caused by the other location observing daylight saving time, not by IRKT itself.
Is IRKT the same as UTC+8?
In terms of current offset, yes, IRKT is a UTC+8 time zone. However, the abbreviation IRKT specifically refers to the Irkutsk regional time standard, while UTC+8 is a general offset that can apply to many different places.
This distinction matters because multiple zones share the same offset but have different names and geographic contexts. For example, SGT, HKT, PHT, MYT, AWST, and BNT are also at UTC+8, yet they refer to different countries or regions and may be used in different business, travel, or legal contexts.
Which other time zone abbreviations have the same offset as IRKT?
Several abbreviations share the same UTC+8 offset as IRKT, including AWST, BNT, CAST, CHOT, CST, H, HKT, HOVST, KRAST, MYT, PHT, SGT, ULAT, and WITA. Even though the clock time matches, these abbreviations represent different regions such as Western Australia, Brunei, Hong Kong, Malaysia, the Philippines, Singapore, Mongolia, and parts of Indonesia and Russia.
This is useful when comparing schedules across Asia-Pacific operations. If your team works with partners in Singapore, Hong Kong, Kuala Lumpur, Manila, or Perth, a meeting set for 3:00 PM IRKT is also 3:00 PM in those locations, which reduces conversion errors and simplifies recurring calendar invites.