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Business Day Calculator

Business Days in December 2028

December 2028 has 20 business days under the US federal holiday calendar. December 2028 contains one US federal holiday. The month covers 31 calendar days, of which 10 fall on a weekend. That count drives invoice due dates, payroll cycles, project sprint planning, and any contract that defines deadlines as a number of working days.

Business Days

20

Calendar Days

31

Weekend Days

10

Holidays

1

Work Weeks

4.0

December 2028 business day calendar
SunMonTueWedThuFriSat
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Christmas Day
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Holidays in December 2028

Mon, Dec 25Christmas Day

December 25. Federal offices, the Federal Reserve, the bond market, and the NYSE close. When December 25 falls on a Saturday, the federal observance shifts to Friday; when it falls on a Sunday, it shifts to the following Monday. Year-end accruals and bonus payroll typically settle the business day before.

Day-of-Week Distribution

The count of each weekday in December 2028. Useful for shift scheduling, weekly recurring billing, and any rota that depends on a specific day of the week landing in-month.

DayCount
Monday4
Tuesday4
Wednesday4
Thursday4
Friday5
Saturday5
Sunday5

Business Days in December 2028 by Country

Working-day counts vary by country because each country observes its own public holidays. The table below covers all eleven holiday calendars supported on this site.

CountryBusiness DaysHolidays this month
๐Ÿ‡บ๐Ÿ‡ธUnited States20Christmas Day
๐Ÿ‡ฌ๐Ÿ‡งUnited Kingdom19Christmas Day, Boxing Day
๐Ÿ‡จ๐Ÿ‡ฆCanada19Christmas Day, Boxing Day
๐Ÿ‡ฆ๐Ÿ‡บAustralia19Christmas Day, Boxing Day
๐Ÿ‡ฎ๐Ÿ‡ณIndia20Christmas Day
๐Ÿ‡ต๐Ÿ‡ญPhilippines19Feast of the Immaculate Conception, Christmas Day
๐Ÿ‡ซ๐Ÿ‡ทFrance20Noรซl
๐Ÿ‡ฉ๐Ÿ‡ชGermany19Erster Weihnachtstag, Zweiter Weihnachtstag
๐Ÿ‡ฏ๐Ÿ‡ตJapan21None
๐Ÿ‡ฒ๐Ÿ‡ฝMexico20Navidad
๐Ÿ‡ธ๐Ÿ‡ฌSingapore20Christmas Day

Notable December Deadlines

December is the year-end close month. Public companies finalize Q4 reporting plans, accounts payable teams race to clear vendor invoices before the December 31 cutoff, and FSA participants spend down balances under the use-it-or-lose-it rule. Banks observe Christmas Day on December 25 and New Year's Eve typically runs a half-day session on the NYSE.

How December 2028 Compares

December 2027 had 21 business days, so December 2028 has 1 fewer working day year over year. On the surrounding months, November 2028 has 20 business days and January 2029 has 21. Looking forward, December 2029 will have 20 business days under the same federal holiday calendar.

Using This Calculator

A receivables analyst running a Net 30 portfolio uses the 20-business-day count in December 2028 to project cash collections by Friday of each week and to flag invoices whose due dates land on the holidays listed above. A project manager scoping a sprint that starts on the first business day of December uses the calendar grid to slot stand-ups, design reviews, and customer demos onto live working days rather than weekends. A specialty contractor billing time and materials uses the day-of-week distribution to see how many Mondays and Fridays fall in December 2028, which matters for crews who set installation appointments at the start and end of each week and skip Tuesday-to-Thursday for travel-heavy jobs.

For informational purposes only

This calculator provides general estimates based on business day counting rules. It does not constitute legal advice. Deadlines in legal, regulatory, or contractual matters may be subject to jurisdiction-specific rules, court orders, or statutory exceptions. Always verify critical deadlines with a qualified professional.

Frequently Asked Questions

How many business days are in December 2028?
December 2028 has 20 business days under the US federal holiday calendar. The month spans 31 calendar days, of which 10 fall on Saturday or Sunday and 1 is a federal holiday that lands on a weekday. The remaining 20 weekdays are countable as business days for invoicing, SLA windows, and contract math.
Are there any holidays in December 2028?
December 2028 contains one US federal holiday: Christmas Day on Monday, December 25. Federal offices, the Federal Reserve, and US capital markets close on each of these days. State holidays and bank-specific closures may add additional non-working days for narrower contract definitions.
How does December 2028 compare to December 2027?
December 2027 had 21 business days, so December 2028 has 1 fewer 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. December 2028 starts on a Friday and December 2027 started on a Wednesday, which determines how many of each weekday land in-month.
Why does the business-day count vary year to year?
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.
What if I need business days for a different country?
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 December 2028 business-day count under each of the eleven supported holiday calendars side by side.

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