What Day of the Week Is December 20?
December 20, 2026 falls on a Sunday.
It is day 354 of 2026, and 11 days of the year come after it. The date sits in ISO week 51 and in the fourth quarter, October to December. North of the equator it is day 90 of fall, and winter starts on December 21. In Australia and the rest of the south, it is spring. The Moon is a waxing gibbous that day, and the next full moon is on Wednesday, December 23, 2026. It is not a US federal holiday.
December 20 from 2025 to 2028
The same date in four years, side by side. Moon phases use US Eastern dates.
| Fact | 2025 | 2026 | 2027 | 2028 |
|---|---|---|---|---|
| Day of the week | Saturday | Sunday | Monday | Wednesday |
| Day of the year | 354 of 365 | 354 of 365 | 354 of 365 | 355 of 366 |
| Days left in the year | 11 | 11 | 11 | 11 |
| ISO week | 51 | 51 | 51 | 51 |
| Quarter | Q4 | Q4 | Q4 | Q4 |
| Season (north) | Day 90 of fall | Day 90 of fall | Day 89 of fall | Day 90 of fall |
| Moon (US Eastern) | Waxing crescent | Waxing gibbous | Last quarter | Waxing crescent |
| US federal holiday | No | No | No | No |
| Other holidays | – | – | – | – |
Holidays on December 20
None of the 245 holidays and observances on this site is fixed to December 20.
Born on December 20
In most horoscope tables, December 20 falls under Sagittarius, the sign that runs from November 22 to December 21.
The birthstone for December is the turquoise, and the American Gem Society also lists tanzanite, zircon and blue topaz.
December 20 every year from 1950 to 2049
Find the decade on the left, then the last digit of the year across the top. A baby born on December 20, 1990 arrived on a Thursday, and one born on December 20, 2000 on a Wednesday. Weekends are shaded.
| Years | …0 | …1 | …2 | …3 | …4 | …5 | …6 | …7 | …8 | …9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | Wed | Thu | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun |
| 1960s | Tue | Wed | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat |
| 1970s | Sun | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu |
| 1980s | Sat | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed |
| 1990s | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon |
| 2000s | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun |
| 2010s | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri |
| 2020s | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed | Thu |
| 2030s | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun | Mon | Tue |
| 2040s | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri | Sun | Mon |
When December 20 is on the same weekday again
After 2026, December 20 is next a Sunday in 2037.
| Day of the week | Next year after 2026 |
|---|---|
| Monday | 2027 |
| Tuesday | 2033 |
| Wednesday | 2028 |
| Thursday | 2029 |
| Friday | 2030 |
| Saturday | 2031 |
| Sunday | 2037 |
December 20 by year
| Year | Day of the week | Weekend or weekday |
|---|---|---|
| 2023 | Wednesday | Weekday |
| 2024 | Friday | Weekday |
| 2025 | Saturday | Weekend |
| 2026 | Sunday | Weekend |
| 2027 | Monday | Weekday |
| 2028 | Wednesday | Weekday |
| 2029 | Thursday | Weekday |
| 2030 | Friday | Weekday |
| 2031 | Saturday | Weekend |
| 2032 | Monday | Weekday |
| 2033 | Tuesday | Weekday |
| 2034 | Wednesday | Weekday |
Why the weekday changes
A common year is 365 days, one day more than 52 weeks. So December 20 moves on one weekday each year: Sunday in 2026, Monday in 2027. The jump is two days when February 29 comes in between, so December 20, 2028 is a Wednesday, two on from 2027's Monday. Between 1901 and 2099, the whole pattern repeats every 28 years.
More about December 20 on this site
December 20 questions
What day of the week is December 20, 2026?
December 20, 2026 is a Sunday. It is day 354 of the year and falls in ISO week 51.
Is December 20 a holiday?
None of the holidays on this site is fixed to December 20. December 20, 2026 is not a US federal holiday.
Cite this page
APA: ClockTotals. (2026, October 31). What Day of the Week Is December 20? https://clocktotals.com/what-day-is/december-20/
MLA: “What Day of the Week Is December 20?” ClockTotals, 31 Oct. 2026, clocktotals.com/what-day-is/december-20/.
Link (HTML): <a href="https://clocktotals.com/what-day-is/december-20/">What Day of the Week Is December 20?</a>