acalculator

Days until October 1

October 1 falls on a Thursday in 2026 and a Friday in 2027. The count runs from today’s date on your device to the next October 1; pick another date to count from it instead.

Your numbers

Days until October 1
1

From September 30, 2026, there is 1 day until October 1 on Thursday, October 1, 2026.

Date
Thursday, October 1, 2026
Day of the week
Thursday
In weeks
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: 1. From September 30, 2026, there is 1 day until October 1 on Thursday, October 1, 2026.

Where is October 1 on the calendar?

How to calculate

Counts the days from today, or any date you choose, to the next October 1, with its day of the week.

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 1 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.

  • October 1 comes every year, so the count is never more than 365 days.
  • The start date itself is not counted: from the day before October 1, the count is 1; on October 1 itself, it is 0.
  • Start dates from January 1, 1900 to December 31, 2400 work for the count to October 1, the range the date field accepts.
  • Today is the date on your own device, so the count to October 1 changes at midnight where you are. Dates are whole calendar days, so a daylight-saving change never adds or loses a day.

Machine-readable copies: Markdown, JSON.

Worked examples

Each example is checked against the calculator on every build.

  1. Count from 2027-10-01 gives Date 2027-10-01, Days until October 1 0.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
  2. Count from 2027-01-01 gives Date 2027-10-01, Days until October 1 273.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
  3. Count from 2027-10-02 gives Date 2028-10-01, Days until October 1 365.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)

Other questions people ask

What day of the week is October 1?

Thursday, October 1, 2026; Friday, October 1, 2027; Sunday, October 1, 2028. The weekday of October 1 moves on one day a year, or two when a February 29 falls between.

What day of the year is October 1?

October 1 is day 274 of a common year and day 275 of a leap year, such as 2028. Either way, 91 days of the year come after it.

What season is October 1 in?

In the Northern Hemisphere, October 1 is in fall in every year from 2026 to 2035; in the Southern Hemisphere, it is spring. Seasons here start on the astronomical equinoxes and solstices, dated in US Eastern Time.

Is October 1 a US federal holiday?

No. No US federal holiday falls on October 1. The next one in the calendar after October 1 is Columbus Day, which falls between October 8 and October 14.

How are the days until October 1 counted?

From the start date to October 1, without counting the start date: from September 30 the count is 1, and on October 1 it is 0. The day after, it moves on to the next October 1: from October 2, 2026, that is October 1, 2027, 364 days away.