Days until October
October 2026 starts on Thursday, October 1, 2026. The count starts from today’s date; pick another date to count from it instead.
- Days until October
- 1
From September 30, 2026, there is 1 day until October on Thursday, October 1, 2026.
- Date
- Thursday, October 1, 2026
- Day of the week
- Thursday
- In weeks
- 1 day
- In months and days
- 1 day
Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.
Days until October: 1. From September 30, 2026, there is 1 day until October on Thursday, October 1, 2026.
Where is October on the calendar?
How to calculate
Counts the days from today, or any date you choose, to October 1, the first day of the next October, with its weekday and the time in weeks and months.
Example with the default inputs (Count from September 30, 2026) on the example date Wednesday, September 30, 2026: From September 30, 2026, there is 1 day until October on Thursday, October 1, 2026.
Method: Find the first October 1 on or after the start date, then count the days from the start date to it.
- The count is to October 1, the first day of the month. During October, it counts to October 1 of the next year.
- The start date itself is not counted: from the day before, the count is 1; on the day itself, it is 0.
- Dates are calendar days with no time of day, so a time zone or a daylight-saving change never adds or loses a day.
- Start dates from January 1, 1900 to December 31, 2400 work.
Worked examples
Each example is checked against the calculator on every build.
- Count from 2026-09-28 gives Date 2026-10-01, Days until October 3, Day of the week Thursday.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2026-10-01 gives Date 2026-10-01, Days until October 0, Day of the week Thursday.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2026-10-02 gives Date 2027-10-01, Days until October 364, Day of the week Friday.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
- Count from 2028-02-29 gives Date 2028-10-01, Days until October 215, Day of the week Sunday.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
Other questions people ask
When does October 2026 start?
October 2026 starts on Thursday, October 1, 2026 and ends on Saturday, October 31, 2026.
How many days are in October?
October always has 31 days, so October 2026 runs from Thursday, October 1, 2026 to Saturday, October 31, 2026.
What day of the week does October 2027 start on?
October 2027 starts on a Friday: Friday, October 1, 2027.
What if it is already October?
The page counts to the first day of the month. On October 1 the count is 0; from October 2 to October 31 it counts to October 1 of the next year. From Friday, October 2, 2026, that is Friday, October 1, 2027.
How are the days until October counted?
From the start date (today, unless you change it) to October 1, without counting the start date: from the last day of the month before, the count is 1. The weeks and months shown are the same span, in whole weeks and in whole months plus days.