Is the start date included?

Yes, when it is a business day. The end date is included on the same rule.

What is a business day here?

Monday to Friday, and not a public holiday under the Public Holidays Act. Weekends are excluded.

How long a range can I use?

Up to ten years, between 1994 and 2100.

Tools · Calendars and rates

Business days

Count Monday-to-Friday days between two dates, excluding South African public holidays. Both ends count when they are business days.

How to use it

Enter the start and end dates as YYYY-MM-DD.
Read the business-day count and the holidays that fall inside the range.
Use the holiday list for the year if you need the names of days outside this range.

Questions

Is the start date included?: Yes, when it is a business day. The end date is included on the same rule.
What is a business day here?: Monday to Friday, and not a public holiday under the Public Holidays Act. Weekends are excluded.
How long a range can I use?: Up to ten years, between 1994 and 2100.

An automated client can POST JSON to /api/tools/business-days with from, to. The OpenAPI document is at /api/tools, with a short guide at /llms.txt. Nothing submitted is stored.