Gulf Standard Time to Canada Atlantic Time
Convert times between Gulf Standard Time (GST, UTC+4:00) and Canada Atlantic Time (AST, UTC-4:00). Canada Atlantic Time is 8 hours behind Gulf Standard Time in standard time. During daylight saving time this difference changes to 7 hours.
UTC+4:00→UTC-4:00 / -3:00
Live timezone converterUTC Offset Reference
| Timezone | Abbreviation | Standard offset | DST offset | Country |
|---|---|---|---|---|
| Gulf Standard Time | GST | UTC+4:00 | — | UAE / Oman |
| Canada Atlantic Time | AST / ADT | UTC-4:00 | UTC-3:00 | Canada |
* DST offset applies during summer months. Exact transition dates vary by year.
Standard Time Conversion (GST → AST)
| Gulf Standard Time | Canada Atlantic Time |
|---|---|
| 12:00 AM GST | 4:00 PM (prev day) AST |
| 6:00 AM GST | 10:00 PM (prev day) AST |
| 9:00 AM GST | 1:00 AM AST |
| 12:00 PM GST | 4:00 AM AST |
| 3:00 PM GST | 7:00 AM AST |
| 6:00 PM GST | 10:00 AM AST |
| 9:00 PM GST | 1:00 PM AST |
Summer (DST) Conversion (GST → ADT)
| Gulf Standard Time (summer) | Canada Atlantic Time (summer) |
|---|---|
| 12:00 AM GST | 5:00 PM (prev day) ADT |
| 6:00 AM GST | 11:00 PM (prev day) ADT |
| 9:00 AM GST | 2:00 AM ADT |
| 12:00 PM GST | 5:00 AM ADT |
| 3:00 PM GST | 8:00 AM ADT |
| 6:00 PM GST | 11:00 AM ADT |
| 9:00 PM GST | 2:00 PM ADT |
Daylight Saving Time (DST) Notes
- Canada Atlantic Time observes DST. Clocks advance 1 hour to ADT (UTC-3:00) roughly from month 3 to 11.
- The offset difference shifts between 8h (standard) and 7h (DST season). Always verify the current offset using the live converter below.
Frequently Asked Questions
How do I convert GST to AST?
Add (-8) hours to the GST time to get AST. For example, 9:00 AM GST = 1:00 AM AST.
What is the current UTC offset for Gulf Standard Time?
Gulf Standard Time is always UTC+4:00 (GST) — it does not observe DST.
Is Canada Atlantic Time ahead or behind Gulf Standard Time?
Canada Atlantic Time is 8 hours behind Gulf Standard Time in standard time.
When is a good time to schedule a meeting between GST and AST?
Due to the 8-hour difference, business-hours overlap may be limited. Use the live timezone converter to find a mutually convenient time.
Related Timezone Conversions
Gulf Standard Time → US Eastern TimeGST / ESTGulf Standard Time → US Central TimeGST / CSTGulf Standard Time → US Mountain TimeGST / MSTGulf Standard Time → US Pacific TimeGST / PSTGulf Standard Time → US Alaska TimeGST / AKSTGulf Standard Time → Hawaii TimeGST / HSTGulf Standard Time → Greenwich Mean TimeGST / GMTGulf Standard Time → India Standard TimeGST / IST
Need the exact current time?
Use the live ToolsHub timezone converter to see current times, DST status, and schedule across time zones.