How Many Working Days Are in a Month? (2027 Table)

A month has between 20 and 23 weekdays, and about 21 working days on average once US federal holidays are taken out. In 2027 the average is 20.75 working days a month on the federal calendar: 249 working days spread over 12 months. If your employer does not give December 31 off, it is 20.83. The busiest month is March, with 23 working days. The lightest are January and February, with 19 each.

The table below gives every month of 2027 with its weekdays, federal holidays, working days and working hours at 8 hours a day.

How many working days are in each month of 2027?

A working day is a weekday, Monday to Friday, that is not a public holiday, so a month's working days are its weekdays minus its holidays. The table is DoneThat's own count of the 2027 calendar, using the US federal holidays observed in each month (method at the end). Hours assume an 8-hour day.

December needs a note. Christmas Day 2027 is a Saturday, so it is observed on Friday, December 24. New Year's Day 2028 is also a Saturday, so federal employees get Friday, December 31, 2027 off. If your employer does not give December 31 off, December has 22 working days and the year has 250.

The holiday dates follow the 2027 and 2028 schedules of the US Office of Personnel Management (OPM, retrieved 2026-11-03). Still in 2026? November 2026 has 19 working days (Veterans Day and Thanksgiving fall on weekdays) and December 2026 has 22 (Christmas Day is a Friday).

For the yearly total, the quarters, the full holiday list and how weekend holidays move, see how many working days are in 2027.

What is the average number of working days in a month?

In 2027, a month has 20.75 working days on average (249 ÷ 12) and 21.75 weekdays (261 ÷ 12). Rounded, that is about 21 working days a month, a fair rule of thumb for any recent US year.

The last two rows answer different questions. 173.33 hours is 52 weeks of 40 hours divided by 12, so it counts paid holidays as hours. 166 hours is the time available to work in an average 2027 month, after the 12 federal holidays and before any leave. Use 173.33 to turn a monthly salary into an hourly rate, and 166 to plan work.

Why some months have 23 weekdays and others 20

Every month starts with four full weeks, 28 days, which always hold 20 weekdays. Whatever comes after day 28 decides the rest. A 31-day month adds 3 more days, a 30-day month adds 2, and February adds none (or 1 in a leap year). Each of those extra days that lands on a weekday adds one weekday.

In 2027 that plays out like this:

• 23 weekdays: March and December. Their last three days all fall on weekdays (March 29 to 31 run Monday to Wednesday; December 29 to 31 run Wednesday to Friday).
• 20 weekdays: February, the only month with no days past the 28th.
• 23 working days: only March, because March has no federal holiday. December loses two Fridays to holidays and ends at 21.
• 20 working days: May, October and November.
• 19 working days: January and February, the fewest of the year.

To count any month yourself, start at 20, add one for each weekday from the 29th to the end of the month, then subtract the observed holidays that fall on weekdays in that month. For a range of dates rather than a whole month, the business days calculator does the counting.

Working hours per month in 2027

At 8 hours a day, a month in 2027 holds between 152 and 184 working hours. March has the most, 184. January and February have the fewest, 152 each. The whole year comes to 1,992 hours, or 2,000 if December 31 is a working day.

For a 7.5-hour day, multiply the working days in the table by 7.5 instead: March 2027 becomes 172.5 hours. For a full year view, including what leave and overtime do to the total, see how many work hours are in a year. The work hours calculator converts start and end times into hours, and the timesheet calculator adds up a week.

These are the hours a calendar makes available. DoneThat, the company behind this blog, makes a desktop app that reconstructs the hours you actually worked from your computer activity, without timers, which is useful when the hours you planned and the hours you worked turn out to be different numbers.

Five- and three-paycheck months in 2027

2027 starts on a Friday and has 365 days, so it has 53 Fridays. That gives Friday paydays more five-payday months than usual.

Weekly pay. If you are paid every week, a five-paycheck month is a month with five paydays. For each weekday in 2027:

A payday that lands on a holiday may move, so check your payroll calendar. In 2027 that matters for Monday pay in May: Memorial Day is Monday, May 31, and a payday moved to the next business day, Tuesday, June 1, lands in June.

Biweekly pay. If you are paid every other week, the extra months have three paychecks, not five. Which months depends on your cycle. For the two Friday cycles in 2027:

January has a catch for Friday pay. New Year's Day is a bank holiday, so a direct-deposit payday on Friday, January 1, 2027 usually moves. If your employer pays the business day before, Thursday, December 31, 2026, that check lands in 2026. January 2027 then has four weekly paychecks instead of five, or two biweekly paychecks instead of three, and the January 1 biweekly cycle has 26 paydays in 2027. December 31, 2027 is different: Federal Reserve Banks stay open on the Friday before a Saturday holiday (Federal Reserve Financial Services, retrieved 2026-11-03), so a payday that day can still go through. Check your own payroll calendar before you budget around a third check.

How the table was built

Every number on this page comes from a count of the real 2027 calendar:

1. A short script listed every date in 2027 and counted the Mondays to Fridays in each month.
2. It derived each federal holiday from the dates in 5 U.S.C. 6103, applied the observed-day rules OPM uses (Saturday holidays to the Friday before, Sunday holidays to the Monday after), and checked the dates against OPM's 2027 schedule and the December 31 entry on its 2028 schedule. They match.
3. It subtracted the observed holidays from each month's weekdays and multiplied by 8 for hours.
4. For paydays, it listed every Friday in 2027 and every date in each two-week cycle.

State and company holidays are not in the table. Subtract them from your month to get your own count. Outside the US, the weekday counts still hold; subtract your own country's public holidays instead of the federal ones.

Frequently Asked Questions

How many working days are in a month on average?

About 21 in the US. In 2027 the exact average is 20.75 working days a month after federal holidays, from 21.75 weekdays.

How many working days are in March 2027?

March 2027 has 23 working days. It has 23 weekdays and no federal holiday, which makes it the longest working month of the year.

How many working days are in February 2027?

February 2027 has 19 working days. It has 20 weekdays, and Washington's Birthday on Monday, February 15 is a federal holiday.

How many working hours are in a month?

166 on average in 2027, at 8 hours a day after federal holidays. A month ranges from 152 hours (January, February) to 184 (March). The often-quoted 173.33 hours is 2,080 paid hours divided by 12, holidays included.

Which months have five Fridays in 2027?

January, April, July, October and December. If you are paid weekly on Fridays, those are your five-paycheck months, except that January drops to four if your January 1 payday is moved to December 31, 2026.

Can a month have 24 working days?

Not on a Monday to Friday week. The longest month, 31 days, can hold at most 23 weekdays. A six-day workweek is different: a 31-day month then holds 26 or 27 working days, before holidays.

Sources

• US Office of Personnel Management. Federal Holidays, 2027 and 2028 holiday schedules. Retrieved 2026-11-03.
• Legal Information Institute, Cornell Law School. 5 U.S. Code § 6103, Holidays. Retrieved 2026-11-03.
• Federal Reserve Financial Services. Holiday Schedules, 2026 to 2030 schedule and weekend rules. Retrieved 2026-11-03.

Written by Don, DoneThat's AI coach (LinkedIn) - so this article is AI-written. Day, hour and payday counts are DoneThat's own count of the 2026 and 2027 calendars; holiday dates are checked against the OPM schedules linked above. This is general information, not payroll advice. More about DoneThat; corrections and questions go to support.