Working hours: 09:00–17:00 local. Green = both working.Purple = one side only.
Frequently Asked Questions
What is the difference between toronto and ast?
TORONTO (Toronto) (toronto) is UTC-4 and Arabia Standard Time (ast) is UTC+3. The difference between them is 7 hours.
Where is toronto used?
TORONTO (Toronto) (toronto) is used in Canada and surrounding regions. The IANA timezone identifier is America/Toronto.
Where is ast used?
Arabia Standard Time (ast) is used in Saudi Arabia and surrounding regions. The IANA timezone identifier is Asia/Riyadh. Note: ast is ambiguous and may refer to other timezones.
How do I convert toronto to ast?
Use the interactive converter above. Drag the time slider to any toronto time and the ast equivalent updates instantly. You can also type a time like "3pm" or "15:00" in the input bar.
Toronto is 7 hours behind AST (Riyadh). When it's noon in Toronto, it's 19:00 in AST (Riyadh).
Toronto runs on America/Toronto; AST (Riyadh) runs on Asia/Riyadh. Together they are 7 hours apart.
Mutual working hours
Both Toronto and AST (Riyadh) are simultaneously in business hours for 1 hour per day (assuming standard 9:00–17:00 working hours).
00:0006:0012:0018:0024:00
Toronto
AST (Riyadh)
Overlap (1h)
Best call times between these locations
There is a 1-hour daily window where both locations are in business hours.
09:00 Toronto / 16:00 Riyadh✓ Both working
Working hours defined as 09:00–17:00 local time for each location.
Public holidays this year
Toronto19 holidays
Jun 24Discovery DaySOON
Jun 24National HolidaySOON
Jul 1Canada DaySOON
Jul 12Orangemen's Day
Aug 3Civic Holiday
AST (Riyadh)
No upcoming public holidays this year.
Toronto and AST (Riyadh) — practical scheduling
Toronto (Canada) and AST (Riyadh) (Saudi Arabia) are 7 hours apart. With a 1-hour daily overlap in standard business hours, both teams can connect in real time without either side stretching beyond their normal workday.
💡 Practical scheduling guidelines
✅
If you are in Toronto, aim for 09:00–10:00, which corresponds to 16:00–17:00 in AST (Riyadh) — both teams are within working hours.
Avoid scheduling mistakes — especially around daylight saving changes. Use the ClockinSync Chrome Extension to instantly verify and compare both time zones directly in your browser, without manual calculations.
Need a specific time? Use the slider or type directly into the input bar — it understands "3pm", "15:30", and location-specific formats like "9am Toronto".