Sydney to GST
-6hSydney
AESTSOURCEGST
GSTGreen rows indicate typical business hours (9 AM - 5 PM)
AEST and GST on the World Map
The map below highlights the AEST (Australian Eastern Standard Time) and GST (Gulf Standard Time) timezone regions across the globe.
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.
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.
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.
Time Conversion Guide: Sydney to GST
Sydney runs on Australian Eastern Standard Time (AEST) at UTC+10:00. GST runs on Gulf Standard Time (GST) at UTC+04:00. That puts Sydney 6 hours behind GST — a difference of -6h at the current offsets.
In practice, when it is 9:00 AM in Sydney it is 3:00 AM in GST. Midnight in Sydney is 6:00 PM in GST. Neither zone observes daylight saving time, so the offset between them stays constant all year.
Sydney to GST time conversion table
| Sydney (AEST) | GST (GST) | Day |
|---|---|---|
| 12:00 AM | 6:00 PM | previous day |
| 6:00 AM | 12:00 AM | same day |
| 7:00 AM | 1:00 AM | same day |
| 8:00 AM | 2:00 AM | same day |
| 9:00 AM | 3:00 AM | same day |
| 12:00 PM | 6:00 AM | same day |
| 3:00 PM | 9:00 AM | same day |
| 5:00 PM | 11:00 AM | same day |
| 6:00 PM | 12:00 PM | same day |
| 9:00 PM | 3:00 PM | same day |
Why people convert Sydney to GST time
- Scheduling a call from Sydney to GST: a 10:00 AM start in Sydney lands at 4:00 AM in GST, so you can confirm the slot without doing the arithmetic yourself.
- Finding shared working hours: both Sydney and GST are inside the 9-to-5 working day between 3:00 PM and 5:00 PM AEST time (9:00 AM–11:00 AM GST). That is roughly 2 hours of usable overlap.
- Keeping family and friends in sync: knowing that 8:00 PM in Sydney is 2:00 PM in GST makes it easy to avoid calling at 3 AM.
- Always state the zone abbreviation, not just the hour. "3:00 PM AEST" is unambiguous; "3 PM" across a -6h gap is not.
- Block 3:00 PM–5:00 PM AEST as the recurring meeting window if you work primarily from Sydney and need GST colleagues present.
- Sydney: Clocks spring forward on Sat, Oct 3, 2026. Re-check this page after that date because the offset changes and so does the -6h gap.
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.
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.
Best time to call between Sydney and GST
Both Sydney and GST sit inside the 9 AM – 5 PM working day between 3:00 PM–5:00 PM AEST, which is 9:00 AM–11:00 AM GST. That gives roughly 2 hours of shared time — the safest window for a live call or meeting.
Business hours overlap
Sydney and GST overlap for about 2 hours during the working day — enough for meetings if you avoid the edges of the window.
Sydney is 6 hours behind GST (AEST UTC+10:00 → GST UTC+04:00). The shared working window is 3:00 PM–5:00 PM AEST. Remember to re-check around daylight-saving transitions.
🕐 Daylight Saving Time Info
Sydney
❄ Currently in Standard Time
Standard: UTC+10:00 · DST: UTC+11:00
Clocks spring forward on Sat, Oct 3, 2026
GST
Does not observe DST
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 Sydney and GST?
Sydney (AEST, UTC+10:00) is 6 hours behind GST (GST, UTC+04:00). The gap is currently -6h.
How do I convert Sydney time to GST time?
Add -6h to Sydney local time. For example, 9:00 AM in Sydney is 3:00 AM in GST.
What time is it in GST right now?
GST uses GST at UTC+04:00. Use the live converter at the top of this page — it updates in real time and already accounts for the -6h offset from Sydney.
What is the best time to call GST from Sydney?
Call between 3:00 PM and 5:00 PM AEST — that maps to 9:00 AM–11:00 AM GST and keeps both parties inside the working day.
Which is behind, Sydney or GST?
Sydney is 6 hours behind GST. When it is 12:00 PM in Sydney it is 6:00 AM in GST.
Do Sydney and GST use different time zones?
Sydney (Australia) uses AEST at UTC+10:00, while GST uses GST at UTC+04:00. The IANA identifiers are Australia/Sydney and Asia/Dubai.
Does daylight saving time affect the Sydney–GST difference?
Neither zone observes daylight saving time, so the -6h offset between Sydney and GST is fixed all year.
Which other cities share Sydney's time zone?
AEST also covers Sydney, Melbourne, Brisbane, Canberra, Hobart, Gold Coast.
Which countries use AEST, Sydney's zone?
AEST is used in Australia (NSW, VIC, QLD, TAS, ACT), Papua New Guinea.
Is there a day difference between Sydney and GST?
Not normally. The -6h gap only pushes the date over the previous day.
What is the time difference between Sydney and GST?
GST is -6h from Sydney.
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 timezone is GST in?
GST operates on its local timezone.
What are the business hours in Sydney?
Standard business hours in Sydney are 9:00 AM - 5:00 PM AEST.
Which countries use AEST (Australian Eastern Standard Time)?
AEST is used in Australia (NSW, VIC, QLD, TAS, ACT), Papua New Guinea.
Does AEST observe daylight saving time?
Yes, AEST switches to AEDT during summer months.
What are some interesting facts about AEST?
Queensland does not observe daylight saving time, staying on AEST year-round. Sydney and Melbourne switch to AEDT (UTC+11:00) in summer.
Which cities are in the GST timezone?
Major cities in the GST timezone include Dubai, Abu Dhabi, Muscat, Baku, Tbilisi.
What is the UTC offset for GST?
Gulf Standard Time (GST) is at UTC+04:00.
What should I know about the GST timezone?
Dubai uses GST year-round with no daylight saving time. GST is 9 hours ahead of EST and 4 hours ahead of GMT.
When is it midnight in Sydney, what time is it in GST?
When it is 12:00 AM (midnight) in Sydney (AEST), it is -6h later in GST (GST).
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