VLAST — Vladivostok Summer Time
See what VLAST means, its UTC+11 offset, how it relates to daylight saving time, and how to convert it to other time zones.
How to Convert VLAST to Other Time Zones
Open the VLAST converter page: Go to https://www.xconvert.com/time-converter/vlast-time-zone to load the visual comparison grid with Vladivostok Summer Time (VLAST, UTC+11) as the reference row. This page is useful when you are scheduling a call with partners in Russia’s Far East, checking handoff times for shipping or logistics operations linked to Pacific routes, or comparing working hours for remote teams spread across Asia-Pacific markets.
Add comparison cities with the + Add City button: Click + Add City and search for cities such as Moscow, Tokyo, and Sydney to compare VLAST against major business and transport hubs. Moscow is relevant for domestic coordination across Russia’s long east-west span, Tokyo matters for regional trade and aviation links, and Sydney is useful for finance, consulting, and customer support teams working across similar UTC+10 to UTC+11 seasonal windows.
Drag across the grid to select a meeting window: Click Select to enter selection mode, then drag on the VLAST row from 9:00 AM to 11:00 AM to highlight a purple range with adjustable handles. That example shows how a morning slot in VLAST converts to 2:00 AM to 4:00 AM in Moscow (UTC+3) and 8:00 AM to 10:00 AM in Tokyo (UTC+9), which quickly confirms that a Vladivostok morning meeting works for Japan but is too early for European Russia.
Export and share the chosen time range: After selecting the range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link depending on how you coordinate the event. For example, an ICS file is practical for a distributed operations team, while a share link is faster when confirming a cross-border call with freight agents, airline partners, or software teams in multiple time zones.
About Vladivostok Summer Time (VLAST)
VLAST stands for Vladivostok Summer Time, a daylight saving time designation historically associated with the Vladivostok region in Russia’s Far East. Its exact offset is UTC+11:00, which means local time in VLAST is 11 hours ahead of Coordinated Universal Time; when it is 12:00 noon UTC, it is 11:00 PM in VLAST.
VLAST has been used in parts of eastern Russia, especially around Vladivostok, a major Pacific port near the borders of China and North Korea on the Sea of Japan. Vladivostok itself is a significant transport and naval city with a population of roughly 600,000+ people, and the broader metropolitan area supports shipping, fishing, rail logistics through the eastern end of the Trans-Siberian Railway, and trade flows connecting Russia with Northeast Asia.
Compared with other common time references, VLAST is 11 hours ahead of UTC, 11 hours ahead of GMT, 8 hours ahead of Moscow Standard Time (UTC+3), and typically 2 hours ahead of Japan Standard Time (UTC+9). In practical terms, when it is 9:00 AM in VLAST, it is 1:00 AM UTC, 4:00 AM in Dubai (UTC+4), 9:00 AM in Sydney during AEDT (UTC+11), and 7:00 PM on the previous day in New York during EST (UTC-5).
Several other abbreviations can also appear at UTC+11 during part or all of the year, including AEDT, AET, BST, KOST, L, LHDT, MAGT, NCT, NFT, PONT, SAKT, SBT, SRET, and VUT. These abbreviations do not all refer to the same place or DST rule, so the offset may match while the legal time standard and seasonal behavior differ.
VLAST and Daylight Saving Time
VLAST is a daylight saving time label rather than a year-round standard time, so it is used only during the summer DST period in regions that apply that rule. Historically, VLAST (UTC+11) switched from Vladivostok Standard Time, VLAT (UTC+10) when clocks moved forward by one hour, and then switched back to VLAT when daylight saving ended.
For the current year, 2026, there are no active DST transition dates for Vladivostok in modern Russia, because Russia abolished seasonal daylight saving time in 2014 and no longer changes clocks in Vladivostok each spring and autumn. That means users searching for VLAST today are usually dealing with historical timestamps, archived transport records, legacy software labels, or older calendar data rather than a currently observed civil time rule.
Historically, where VLAST was in effect, the spring transition typically occurred on the last Sunday in March, and the autumn transition on the last Sunday in October, following older Russian DST patterns. In those systems, clocks moved from UTC+10 to UTC+11 in spring and then back from UTC+11 to UTC+10 in autumn, which affected train schedules, port operations, and international calls with East Asia and European Russia.
Because there is no current DST change in Vladivostok in 2026, a planner comparing times for shipping cutoffs, airline coordination, or remote meetings should treat modern Vladivostok time according to the current legal Russian time zone rather than assuming a seasonal VLAST switch. This matters especially when reviewing old documents, because a timestamp marked VLAST may be one hour different from a modern Vladivostok timestamp on the same calendar date.
Frequently Asked Questions
What does VLAST stand for?
VLAST stands for Vladivostok Summer Time. It is the daylight saving time name historically used for the Vladivostok area in Russia’s Far East when the local clock was set to UTC+11:00 during the summer period.
Is VLAST the same as GMT?
No, VLAST is not the same as GMT. GMT is effectively UTC+0, while VLAST is UTC+11, so VLAST is 11 hours ahead of GMT; when it is 10:00 AM GMT, it is 9:00 PM VLAST on the same day.
Which cities use VLAST?
The main city associated with VLAST is Vladivostok, the largest urban center in Russia’s Pacific Far East and an important port city. Historically, nearby parts of the Vladivostok time zone could also be referenced with this abbreviation, but in modern use the label is mostly encountered in legacy systems, historical records, and older software rather than current civil timekeeping.
What is the UTC offset for VLAST?
The UTC offset for VLAST is UTC+11:00. That means local clock time is 11 hours ahead of UTC, so 6:00 AM UTC converts to 5:00 PM VLAST, which is important when checking archived event logs or converting old meeting records.
When does VLAST change?
Historically, VLAST changed when daylight saving time started or ended, typically moving to VLAST (UTC+11) from VLAT (UTC+10) in spring and back again in autumn. However, in 2026 there is no active Vladivostok DST change, because Russia no longer observes seasonal daylight saving time in that region.
Is VLAST still used today?
In most practical current-day scheduling, VLAST is not an actively observed seasonal time zone label in Vladivostok. You are more likely to see it in historical aviation data, archived server timestamps, old travel itineraries, or legacy enterprise systems that preserved earlier Russian DST abbreviations.
How far ahead is VLAST from Moscow?
VLAST is 8 hours ahead of Moscow Standard Time (UTC+3). This means that when it is 9:00 AM in Moscow, it is 5:00 PM in VLAST, a large gap that affects same-day coordination between headquarters in western Russia and port, shipping, or defense operations in the Far East.
Is VLAST the same as AEDT or other UTC+11 abbreviations?
Not exactly. AEDT and some other abbreviations may also equal UTC+11, but they apply to different countries, legal systems, and daylight saving rules; for example, AEDT is used in parts of Australia during summer, while VLAST refers historically to Vladivostok Summer Time in Russia. Matching offsets do not guarantee the same DST start dates, end dates, or regional usage.