Calendar days
A calendar-day count includes weekdays, weekends, and public holidays. Seven calendar days always span one full week.
Business days explained
Business Days vs. Calendar Days
Calendar days include every date. Business days usually exclude Saturdays, Sundays, and—when required—public holidays. Use the calculator to see how that difference changes a real deadline.
Calendar: Canada — Ontario. Choose the country and region whose holidays apply to your calculation.
Result
60 business days
Between Wednesday, October 7, 2026 and Thursday, December 31, 2026, including the first date.
2 public holidays are excluded for Ontario, Canada.Included in this calculation
- Weekends are excluded.
- Public holidays are excluded for Ontario, Canada.
- Ontario uses the nine public-holiday dates in the Employment Standards Act. Civic Holiday, Easter Monday, and Remembrance Day are not excluded by default.
- Holiday data currently covers 2026 and 2027.
- Business holiday rules can vary by employer, industry, city, and contract.
Holidays excluded
ThanksgivingOct 12, 2026
Christmas DayDec 25, 2026
What do calendar days mean?
Calendar days are consecutive dates. Saturdays, Sundays and public holidays all count. If a notice says “within 10 calendar days,” count every date unless the controlling document gives a different definition.
What do business days mean?
Business days normally mean Monday through Friday. Public holidays may also be excluded when the contract, policy or jurisdiction requires it. The applicable definition always takes priority.
Worked deadline example
An invoice dated Monday, August 31, 2026 produces two different ten-day answers:
10 calendar daysThursday, September 10, 2026
Every date is counted.
10 Ontario business daysTuesday, September 15, 2026
Weekends and Ontario Labour Day are skipped.
Business days
A business-day count normally includes Monday through Friday and may exclude public holidays for the selected jurisdiction.
Example: ten days
Ten calendar days are always ten consecutive dates. Ten business days usually span 14 calendar days before regional public holidays are considered.
Start-date rules matter
Some instructions count the starting day as day one; others begin on the following eligible business day. Use the Include start date option to match the rule.
Read the actual wording
Contracts and regulations may define “business day” differently. Always use the definition in the controlling document for important deadlines.
Frequently asked questions
What is included in the business days vs. calendar days?
The calculator excludes weekends and can also exclude public holidays for the selected country or region. The result shows the assumption used in the calculation.
Are public holidays excluded automatically?
Public holidays are excluded when the Weekends + holidays option is turned on. You can switch to Weekends only if you want a weekday-only count.
Can I share or copy the result?
Yes. Use Copy result for the plain answer, or Copy link to share the same calculation settings with someone else.
Should I use this for legal or payroll deadlines?
Use the calculator as a helpful planning tool, but review important deadlines because business-day rules can vary by employer, contract, industry, city, and jurisdiction.
Popular calculators
Choose a focused calculator page for common business-day and working-day questions.
Planning by year
Use a year-focused page when you are checking annual schedules or future deadline windows.
Calculators by country
Use a country page when regional public holidays matter for your deadline or planning calculation.
Trust and data
Review how calculations are handled and which holiday calendars are currently covered.