acalculator

Days until December 27

December 27 falls on a Sunday in 2026 and a Monday in 2027. The count runs from today’s date on your device to the next December 27; pick another date to count from it instead.

Your numbers

Days until December 27
88

From September 30, 2026, there are 88 days until December 27 on Sunday, December 27, 2026.

Date
Sunday, December 27, 2026
Day of the week
Sunday
In weeks
12 weeks and 4 days

Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.

Days until December 27: 88. From September 30, 2026, there are 88 days until December 27 on Sunday, December 27, 2026.

Where is December 27 on the calendar?

How to calculate

Counts the days from today, or any date you choose, to the next December 27, 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 are 88 days until December 27 on Sunday, December 27, 2026.

Method: Find the first December 27 on or after the start date, then count the days from the start date to it.

  • December 27 comes every year, so the count is never more than 365 days.
  • The start date itself is not counted: from the day before December 27, the count is 1; on December 27 itself, it is 0.
  • Start dates from January 1, 1900 to December 31, 2400 work for the count to December 27, the range the date field accepts.
  • Today is the date on your own device, so the count to December 27 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 2027-12-27 gives Date 2027-12-27, Days until December 27 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 2027-12-27, Days until December 27 360.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
  3. Count from 2027-12-28 gives Date 2028-12-27, Days until December 27 365.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 December 27?

Sunday, December 27, 2026; Monday, December 27, 2027; Wednesday, December 27, 2028. The weekday of December 27 moves on one day a year, or two when a February 29 falls between.

What day of the year is December 27?

December 27 is day 361 of a common year and day 362 of a leap year, such as 2028. Either way, 4 days of the year come after it.

What season is December 27 in?

In the Northern Hemisphere, December 27 is in winter in every year from 2026 to 2035; in the Southern Hemisphere, it is summer. Seasons here start on the astronomical equinoxes and solstices, dated in US Eastern Time.

Is December 27 a US federal holiday?

No. No US federal holiday falls on December 27. The next one in the calendar after December 27 is New Year's Day, which falls on January 1.

How are the days until December 27 counted?

From the start date to December 27, without counting the start date: from December 26 the count is 1, and on December 27 it is 0. The day after, it moves on to the next December 27: from December 28, 2026, that is December 27, 2027, 364 days away.