GST — Gulf Standard Time
See what GST means, its UTC+4 offset, where it is used, and how to compare or convert it with other time zones.
How to Convert GST to Other Time Zones
Open the GST converter page: Go to https://www.xconvert.com/time-converter/gst-time-zone to open the visual comparison grid with Gulf Standard Time (UTC+4) as the reference row. This page is useful when you need to line up working hours in the Gulf region with teams in places such as London, New York, or Mumbai for client calls, shipping coordination, aviation schedules, or remote support coverage.
Add comparison cities: Click “+ Add City” and search for specific cities you work with, such as Dubai, London, and New York for finance, logistics, and multinational business coordination. You could also add Mumbai for trade and outsourcing, or Singapore for shipping and regional headquarters, so you can compare GST against major commercial hubs that often interact with Gulf businesses.
Select a time range on the grid: Click “Select” to enter selection mode, then drag across the GST row to highlight a meeting window, such as 9:00 AM to 11:00 AM GST. That selection shows immediately how the same period maps elsewhere: for example, 9:00 AM GST is 5:00 AM in London during standard time, 6:00 AM in London during British Summer Time, 1:00 AM in New York during Eastern Daylight Time, and 10:30 AM in Mumbai, which helps confirm whether a Gulf morning meeting is practical for Europe, North America, or South Asia.
Export and share the result: After selecting the range, use the export options shown on the page: ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link. This is especially useful for sending a confirmed GST-based meeting slot to a distributed team, because the calendar export lets each recipient see the event in their own local time automatically instead of manually converting UTC+4.
About Gulf Standard Time (GST)
Gulf Standard Time (GST) is a time standard with a fixed offset of UTC+4:00, meaning it is 4 hours ahead of Coordinated Universal Time. When it is 12:00 noon UTC, it is 4:00 PM GST. This makes GST one hour ahead of Arabia Standard Time (UTC+3) and one hour behind time zones at UTC+5 such as Pakistan Standard Time.
GST is used in the eastern Arabian Peninsula, most notably in the United Arab Emirates and Oman. In practical terms, this means major urban and commercial centers such as Dubai, Abu Dhabi, Sharjah, Muscat, and Sohar operate on UTC+4 year-round. Dubai in particular is a major global hub for aviation, finance, real estate, tourism, and regional headquarters, so GST frequently appears in business scheduling, flight planning, and international event coordination.
Because GST is fixed at UTC+4 all year, it provides a stable reference for cross-border work with Europe, Asia, and Africa. For example, GST is 4 hours ahead of UTC, 1 hour ahead of Riyadh, 30 minutes behind India Standard Time (UTC+5:30), and typically 3 to 4 hours ahead of Central Europe depending on the season. That consistency is useful for industries such as airlines, maritime shipping, oil and gas, consulting, and cloud operations teams that need predictable handoff windows.
The abbreviation GST can be confused with other meanings, especially Goods and Services Tax in tax and accounting contexts, so in timekeeping it is important to read it specifically as Gulf Standard Time. It is also worth noting that several other abbreviations share the same UTC+4 offset at certain times of year, including ADT, AMT, AZT, GET, KUYT, MSD, MUT, RET, SAMT, and SCT, but those labels apply to different regions and may not have the same daylight saving behavior or legal usage.
GST and Daylight Saving Time
Gulf Standard Time does not observe daylight saving time, so it does not switch to any summer or winter variant. Its offset remains UTC+4:00 throughout the entire year, with no seasonal clock changes in spring or autumn. For the current year, 2026, there are no DST transition dates for GST.
This means the time difference between GST and other regions changes only when those other regions move their clocks. For example, GST is usually 4 hours ahead of London in winter when the UK is on GMT (UTC+0), but only 3 hours ahead in summer when the UK moves to BST (UTC+1). Similarly, GST is typically 9 hours ahead of New York during U.S. standard time and 8 hours ahead during U.S. daylight time.
That no-DST behavior is particularly helpful for recurring schedules. If a Dubai-based company sets a weekly meeting at 3:00 PM GST, the Gulf-side time never changes, but colleagues in Europe or North America may see the meeting shift by one hour after their local DST transitions. In 2026, for example, the United States begins daylight saving time on March 8, 2026, and ends it on November 1, 2026, while the United Kingdom begins BST on March 29, 2026, and returns to GMT on October 25, 2026.
Frequently Asked Questions
What does GST stand for?
In time zone usage, GST stands for Gulf Standard Time. It refers to the UTC+4:00 time standard used in parts of the Gulf region, especially the United Arab Emirates and Oman, and it does not change seasonally.
Is GST the same as GMT?
No, GST is not the same as GMT. GMT is Greenwich Mean Time (UTC+0), while GST is Gulf Standard Time (UTC+4), so GST is 4 hours ahead of GMT. If it is 9:00 AM GMT in London during winter, it is 1:00 PM GST in Dubai or Muscat.
Which cities use GST?
Major cities using GST include Dubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah, Fujairah, and Muscat. These cities are important for sectors such as aviation, port logistics, tourism, energy, and regional corporate operations, which is why GST appears frequently in international scheduling and travel itineraries.
What is the UTC offset for GST?
The exact UTC offset for Gulf Standard Time is UTC+4:00. That means you add 4 hours to UTC to get GST, so 6:00 UTC becomes 10:00 GST. This offset stays constant all year because GST does not observe daylight saving time.
When does GST change?
GST does not change at any point in the year. There are no daylight saving transitions, no switch to a summer time, and no official clock adjustment dates in 2026. Any apparent change in time difference usually happens because another region, such as Europe or North America, has entered or left DST.
Is GST used all year round?
Yes, Gulf Standard Time is used year-round in the places that observe it. Countries such as the United Arab Emirates and Oman keep the same UTC+4 offset in January, June, and October, which makes recurring business schedules easier to maintain from the Gulf side.
How far ahead is GST from UTC and other major time zones?
GST is 4 hours ahead of UTC, 1 hour ahead of Riyadh (UTC+3), and 30 minutes behind India Standard Time (UTC+5:30). Compared with London, GST is 4 hours ahead in winter and 3 hours ahead in summer; compared with New York, GST is generally 9 hours ahead in winter and 8 hours ahead in summer. These differences matter for trading desks, airline operations, and remote teams trying to find overlap between Gulf mornings and European work hours.
Why does the time difference between GST and London or New York change if GST has no DST?
The difference changes because London and New York observe daylight saving time, while GST does not. For example, a 2:00 PM GST meeting is 10:00 AM in London during UK summer time but 9:00 AM in London during winter. The Gulf-side clock stays fixed; only the other region’s legal time changes.