Business Days in September 1997

September 1997 has 22 business days under the US federal holiday calendar. The month spans 30 calendar days, of which 8 fall on Saturday or Sunday and 0 are federal holidays that lands on a weekday. The remaining 22 weekdays are countable as business days for invoicing, SLA windows, and contract math.

September 1997 contains no US federal holidays that fall on a weekday. Banks, the Federal Reserve, and US capital markets keep their normal schedule throughout the month. The full quarter has no US federal closures, which is unusual; staff vacation requests cluster around state and personal days instead.

September 1996 had 21 business days, so September 1997 has 1 more working day year over year. The shift is driven by where weekends and federal holidays fall on the calendar in each year, not by any change in the number of holidays themselves. September 1997 starts on a Monday and September 1996 started on a Sunday, which determines how many of each weekday land in-month.

Two things shift the monthly count. First, the day of the week the first of the month lands on changes the count of each weekday: a 31-day month starting on a Friday produces five Fridays, five Saturdays, and five Sundays, while one starting on a Monday produces five Mondays, five Tuesdays, and five Wednesdays. Second, federal holidays anchored to a fixed date (Independence Day, Veterans Day, Christmas Day) shift their weekday across years; some years the holiday lands on a weekend and the observance moves to the adjacent Friday or Monday, which keeps the business-day count steady but changes which weekday is excluded.

Use the country selector in the calculator above, or visit the dedicated country pages for the United Kingdom, Canada, Australia, India, the Philippines, France, Germany, Japan, Mexico, or Singapore. Each calculator excludes that country's national public holidays. The country comparison table further down this page shows the September 1997 business-day count under each of the eleven supported holiday calendars side by side.