GST to Sydney
+6hGST
GSTSOURCESydney
AESTGreen rows indicate typical business hours (9 AM - 5 PM)
GST and AEST on the World Map
The map below highlights the GST (Gulf Standard Time) and AEST (Australian Eastern Standard Time) timezone regions across the globe.
GST – Gulf Standard Time
UTC+04:00Gulf Standard Time (GST) is used in the UAE, Oman, and other Gulf states, 4 hours ahead of UTC.
- •Dubai uses GST year-round with no daylight saving time.
- •GST is 9 hours ahead of EST and 4 hours ahead of GMT.
- •The Dubai Financial Market (DFM) operates on GST.
AEST – Australian Eastern Standard Time
UTC+10:00Australian Eastern Standard Time (AEST) covers eastern Australia, 10 hours ahead of UTC.
- •Queensland does not observe daylight saving time, staying on AEST year-round.
- •Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
- •The Australian Securities Exchange (ASX) operates on AEST/AEDT.
- •AEST is 15 hours ahead of EST during winter.
About Sydney
WikipediaSydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
Sydney is one of the first major cities to welcome the New Year.
GST vs Sydney: Offsets, DST and Best Call Times
GST runs on Gulf Standard Time (GST) at UTC+04:00. Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. That puts GST 6 hours ahead of Sydney — a difference of +6h at the current offsets.
In practice, when it is 9:00 AM in GST it is 3:00 PM in Sydney. Midnight in GST is 6:00 AM in Sydney. Neither zone observes daylight saving time, so the offset between them stays constant all year.
GST to Sydney time conversion table
| GST (GST) | Sydney (AEST) | Day |
|---|---|---|
| 12:00 AM | 6:00 AM | same day |
| 6:00 AM | 12:00 PM | same day |
| 7:00 AM | 1:00 PM | same day |
| 8:00 AM | 2:00 PM | same day |
| 9:00 AM | 3:00 PM | same day |
| 12:00 PM | 6:00 PM | same day |
| 3:00 PM | 9:00 PM | same day |
| 5:00 PM | 11:00 PM | same day |
| 6:00 PM | 12:00 AM | next day |
| 9:00 PM | 3:00 AM | next day |
Why people convert GST to Sydney time
- Scheduling a call from GST to Sydney: a 10:00 AM start in GST lands at 4:00 PM in Sydney, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both GST and Sydney are inside the 9-to-5 working day between 9:00 AM and 11:00 AM GST time (3:00 PM–5:00 PM AEST). That is roughly 2 hours of usable overlap.
- Coordinating a GST-based team with Sydney contacts: quoting times in the other side's local clock — not your own — removes the single biggest source of missed meetings.
- Always state the zone abbreviation, not just the hour. "3:00 PM GST" is unambiguous; "3 PM" across a +6h gap is not.
- Block 9:00 AM–11:00 AM GST as the recurring meeting window if you work primarily from GST and need Sydney colleagues present.
- Sydney: Clocks spring forward on Sat, Oct 3, 2026. Any meeting series spanning that date will shift by an hour in local time.
About GST (Gulf Standard Time)
Gulf Standard Time (GST) is the time zone used in the United Arab Emirates, Oman, and other Gulf states. GST does not observe daylight saving time. Dubai and Abu Dhabi, major international business and tourism hubs, operate on GST.
About AEST (Australian Eastern Standard Time)
Australian Eastern Standard Time (AEST) is used in the eastern states of Australia including New South Wales, Victoria, Queensland, Tasmania, and the ACT. During summer (October to April), NSW, VIC, TAS, and ACT switch to Australian Eastern Daylight Time (AEDT, UTC+11:00), while Queensland remains on AEST year-round.
Best time to call between GST and Sydney
Both GST and Sydney sit inside the 9 AM – 5 PM working day between 9:00 AM–11:00 AM GST, which is 3:00 PM–5:00 PM AEST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
GST and Sydney overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
GST is 6 hours ahead of Sydney (GST UTC+04:00 → AEST UTC+10:00). The shared working window is 9:00 AM–11:00 AM GST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
GST
Does not observe DST
Sydney
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
Learn More About Time
Dive deeper into the fascinating world of timekeeping, time zones, and how they shape our global society:
Frequently Asked Questions
What is the time difference between GST and Sydney?
GST (GST, UTC+04:00) is 6 hours ahead of Sydney (AEST, UTC+10:00). The gap is currently +6h.
How do I convert GST time to Sydney time?
Add +6h to GST local time. For example, 9:00 AM in GST is 3:00 PM in Sydney.
What time is it in Sydney right now?
Sydney uses AEST at UTC+10:00. Use the live converter at the top of this page — it updates in real time and already accounts for the +6h offset from GST.
What is the best time to call Sydney from GST?
Call between 9:00 AM and 11:00 AM GST — that maps to 3:00 PM–5:00 PM AEST and keeps both parties inside the working day.
Which is ahead, GST or Sydney?
GST is 6 hours ahead of Sydney. When it is 12:00 PM in GST it is 6:00 PM in Sydney.
Do GST and Sydney use different time zones?
GST uses GST at UTC+04:00, while Sydney (Australia) uses AEST at UTC+10:00. The IANA identifiers are Asia/Dubai and Australia/Sydney.
Does daylight saving time affect the GST–Sydney difference?
Neither zone observes daylight saving time, so the +6h offset between GST and Sydney is fixed all year.
Which other cities share GST's time zone?
GST also covers Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
Which countries use GST, GST's zone?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Is there a day difference between GST and Sydney?
Not normally. The +6h gap only pushes the date over for late-evening times.
What is the time difference between GST and Sydney?
Sydney is +6h from GST.
What timezone is GST in?
GST operates on its local timezone.
What timezone is Sydney in?
Sydney operates on Australian Eastern Standard Time (AEST/AEDT). As Australia's financial capital, Sydney opens global markets at the start of the business day.
What are the business hours in Sydney?
Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.
Which countries use GST (Gulf Standard Time)?
GST is used in UAE, Oman, Georgia, Azerbaijan, Mauritius.
Does GST observe daylight saving time?
No, GST does not observe daylight saving time and remains at UTC+04:00 year-round.
What are some interesting facts about GST?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
Which cities are in the AEST timezone?
Major cities in the AEST timezone include Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
What is the UTC offset for AEST?
Australian Eastern Standard Time (AEST) is at UTC+10:00. During daylight saving time, it shifts to AEDT.
What should I know about the AEST timezone?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
When is it midnight in GST, what time is it in Sydney?
When it is 12:00 AM (midnight) in GST (GST), it is +6h later in Sydney (AEST).
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