How many days are in October?

Q: How many days are in October?

31 days. October 2026 runs from Thursday, October 1, 2026 to Saturday, October 31, 2026: 31 days in all, 22 of them weekdays and 9 weekend days. One federal holiday falls inside it — Columbus Day (October 12, 2026) — so 21 working days are left once those are taken off. Both end days are counted, which is how a calendar counts a month rather than how a date difference counts one. Business days here are Monday to Friday; federal holidays are listed separately because private employers do not all take the same ones.

October 2026 has

31 days

Counted from Thursday, September 10, 2026. The figures are for October 2026; the table below carries them forward.

Days: 31
Weekdays: 22
Weekend days: 9
That is: 4 weeks and 3 days

October 2026 runs from Thursday, October 1, 2026 to Saturday, October 31, 2026: 31 days in all, 22 of them weekdays and 9 weekend days. One federal holiday falls inside it — Columbus Day (October 12, 2026) — so 21 working days are left once those are taken off. Both end days are counted, which is how a calendar counts a month rather than how a date difference counts one. Business days here are Monday to Friday; federal holidays are listed separately because private employers do not all take the same ones.

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Result

31 days

Days: 31
Weeks and days: 4 weeks, 3 days
Months and days: 0 months, 30 days
Business days (Mon–Fri): 22Weekdays only; public holidays are not excluded.
Weekend days: 9
Resulting date: —
Day of the week: Thursday → Saturday

Assumptions

Dates are local calendar dates; times and time zones are ignored.
Business days are Monday–Friday with no holiday exclusions.
Adding months keeps the day of month, clamped to the target month's length.

Common deadlines from October 1, 2026

After	Date	Falls on a
7 days	October 8, 2026	Thursday
14 days	October 15, 2026	Thursday
21 days	October 22, 2026	Thursday
30 days	October 31, 2026	Saturday
45 days	November 15, 2026	Sunday
60 days	November 30, 2026	Monday
90 days	December 30, 2026	Wednesday
120 days	January 29, 2027	Friday
180 days	March 30, 2027	Tuesday
365 days	October 1, 2027	Friday

Calendar days counted from the start date, the day itself not counted. Deadlines written as 'within 90 days' are calendar days unless the contract or court rule says business days.

October in the next five years

Year	Days	Business days
October 2026	31 days	22 weekdays, 21 working
October 2027	31 days	21 weekdays, 20 working
October 2028	31 days	22 weekdays, 21 working
October 2029	31 days	23 weekdays, 22 working
October 2030	31 days	23 weekdays, 22 working

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