HKT to GST Converter
Convert time between Hong Kong Time (HKT) and Gulf Standard Time (GST)
Hong Kong Time (HKT)
Gulf Standard Time (GST)
Time Difference
Gulf Standard Time (GST) is 0 hours ahead of Hong Kong Time (HKT)
Select Date
Select Time
Quick Reference
| HKT | GST |
|---|---|
| 10:00 | 06:00 |
| 12:00 | 08:00 |
| 14:00 | 10:00 |
| 16:00 | 12:00 |
| 18:00 | 14:00 |
| 20:00 | 16:00 |
| 22:00 | 18:00 |
| 00:00 | 20:00 |
| 02:00 | 22:00 |
| 04:00 | 00:00 |
| 06:00 | 02:00 |
| 08:00 | 04:00 |
Top 10 Most Common Time Zones
| Abbreviation | Full Name | UTC Offset | Typical Use |
|---|---|---|---|
| UTC | Coordinated Universal Time | UTC ±0 | Global reference standard (servers, logs, APIs) |
| EST / EDT | Eastern (US) Time | UTC −5 / −4 | New York, Toronto — North American business hub |
| CST / CDT | Central (US) Time | UTC −6 / −5 | Chicago, Dallas — US central business region |
| PST / PDT | Pacific (US) Time | UTC −8 / −7 | San Francisco, Los Angeles — tech industry standard |
| GMT / BST | Greenwich Mean / British Summer Time | UTC 0 / +1 | UK, used globally as a reference with UTC |
| CET / CEST | Central European (Summer) Time | UTC +1 / +2 | Paris, Berlin, Amsterdam — EU business core |
| IST | India Standard Time | UTC +5:30 | India — major IT & outsourcing region |
| CST | China Standard Time | UTC +8 | Beijing, Shanghai — East Asia business hub |
| JST | Japan Standard Time | UTC +9 | Tokyo — finance & tech hub |
| AEST / AEDT | Australian Eastern (Daylight) Time | UTC +10 / +11 | Sydney, Melbourne — APAC regional business |
Why Time Zone Abbreviations Are Ambiguous
Unlike standardized identifiers (like America/New_York or Europe/London from the IANA tz database), abbreviations such as "CST" or "IST" are not globally unique. They can refer to different time zones depending on context — country, region, or even time of year (due to daylight saving time).
Common Ambiguous Time Zone Abbreviations
| Abbrev. | Common Meaning(s) | UTC Offset | Region(s) |
|---|---|---|---|
| CST | Central Standard Time / China Standard Time / Cuba Standard Time | UTC−6 / UTC+8 / UTC−5 | North America, China, Cuba |
| IST | Indian Standard Time / Irish Standard Time / Israel Standard Time | UTC+5:30 / UTC+1 / UTC+2 | India, Ireland, Israel |
| AST | Atlantic Standard Time / Arabia Standard Time | UTC−4 / UTC+3 | Caribbean, Canada, Middle East |
| PST | Pacific Standard Time / Philippine Standard Time | UTC−8 / UTC+8 | North America, Philippines |
| EST | Eastern Standard Time (North America / Australia) | UTC−5 / UTC+10 | North America, Australia |
✅ Best Practice
To avoid ambiguity, always:
- Use IANA tz identifiers — e.g.,
America/New_Yorkinstead of "EST" - Specify UTC offset explicitly — e.g.,
UTC−5when abbreviations must be used - Include the full timezone name — e.g., "Eastern Standard Time (EST)" with UTC offset
About HKT to GST Time Conversion
Converting time between Hong Kong Time (HKT) and Gulf Standard Time (GST) is a steady 4-hour calculation. HKT is UTC+8 year-round, while GST is UTC+4, so Hong Kong is always 4 hours ahead of Dubai, Abu Dhabi, Sharjah and Muscat. Neither side observes daylight saving time, so the offset never shifts.
This time zone converter uses the IANA timezone database (Asia/Hong_Kong and Asia/Dubai) for accurate calculations. GST covers the United Arab Emirates and Oman, two of East Asia's most active Gulf trading partners. Note that the abbreviation GST is sometimes used informally for Georgia Standard Time; this page covers the Gulf zone. Whether you are scheduling Hong Kong to Dubai calls, planning travel, or coordinating with Middle Eastern teams, our converter delivers a stable year-round offset.
Common Use Cases for HKT to GST Conversion
Business & Work
- Scheduling calls between Hong Kong and Dubai or Abu Dhabi offices
- Coordinating trade, logistics or finance workflows between East Asia and the Gulf
- Planning conference calls with Muscat or Sharjah partners
Personal & Travel
- Planning travel from Hong Kong to the UAE or Oman
- Coordinating with family and friends in Dubai, Abu Dhabi or Muscat
- Scheduling virtual events with Gulf-region contacts
Time Zone Information
Hong Kong Time (HKT)
- UTC Offset: UTC+8
- IANA Timezone: Asia/Hong_Kong
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Hong Kong, Kowloon, Tsuen Wan, Yuen Long
- Coverage: Hong Kong Special Administrative Region
Gulf Standard Time (GST)
- UTC Offset: UTC+4
- IANA Timezone: Asia/Dubai
- Daylight Saving: No daylight saving time (consistent year-round)
- Major Cities: Dubai, Abu Dhabi, Sharjah, Muscat, Al Ain
- Coverage: United Arab Emirates and Oman
Quick Reference: HKT to GST
Remember: GST is 4 hours behind HKT, year-round. Neither Hong Kong nor the Gulf states observe daylight saving, so the 4-hour offset never changes.
Frequently Asked Questions
What is the time difference between HKT and GST?
Hong Kong Time (HKT) is UTC+8, while Gulf Standard Time (GST) is UTC+4. GST is 4 hours behind HKT, year-round. When it is 12:00 PM in Hong Kong, it is 8:00 AM in Dubai, Abu Dhabi or Muscat.
Does either side observe daylight saving time?
No. Hong Kong stays on HKT (UTC+8) year-round, and the UAE and Oman stay on GST (UTC+4) year-round. The 4-hour offset never changes, in either direction.
Is GST the same as Georgia Standard Time?
No. In this converter GST means Gulf Standard Time, used in the United Arab Emirates and Oman. The abbreviation is sometimes used informally for the US state of Georgia, but Georgia uses EST/EDT — see HKT to EST or HKT to EDT for that.
What are the best times for HKT-GST business calls?
There is generous overlap. Hong Kong afternoon (1:00 to 6:00 PM HKT) maps to Gulf morning to mid-afternoon (9:00 AM to 2:00 PM GST), a clean window inside both workdays. Hong Kong evening (8:00 to 9:00 PM HKT) is Gulf 4:00 to 5:00 PM, still inside Gulf business hours.
Which countries or regions use GST?
GST is used in the United Arab Emirates and Oman. Major cities include Dubai, Abu Dhabi, Sharjah, Muscat and Al Ain. Other Gulf states (Saudi Arabia, Bahrain, Qatar, Kuwait) use AST/Arabia Standard Time at UTC+3, a different zone despite the neighbouring geography.
Which countries or regions use HKT?
Hong Kong Time is used in the Hong Kong Special Administrative Region. The same UTC+8 offset is shared with mainland China (CST), Taiwan, Singapore (SGT), the Philippines (PHT) and Western Australia (AWST).
Pro Tips
- • GST is 4 hours behind HKT — subtract 4 hours from Hong Kong time to get Dubai or Muscat time.
- • No DST on either side. The 4-hour offset is stable every day of the year.
- • GST in this converter = Gulf Standard Time (UAE/Oman). It is not the same as US Georgia (EST/EDT).
- • Hong Kong 1:00 PM to 6:00 PM maps to Gulf 9:00 AM to 2:00 PM — a wide overlap for live meetings.
- • Neighbouring Saudi Arabia, Bahrain, Qatar and Kuwait are an hour behind GST on AST (UTC+3); a 5-hour gap to HKT.
- • Use IANA identifiers Asia/Hong_Kong and Asia/Dubai in calendars so any future policy change is reflected automatically.