What Day of the Week Is January 18?
January 18, 2027 falls on a Monday. This year, January 18, 2026 was a Sunday.
It is day 18 of 2027, and 347 days of the year come after it. The date sits in ISO week 3 and in the first quarter, January to March. North of the equator it is day 29 of winter, and spring starts on March 20. In Australia and the rest of the south, it is summer. The Moon is a waxing gibbous that day, and the next full moon is on Friday, January 22, 2027. It is a US federal holiday, Martin Luther King Jr. Day.
January 18 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 | Tuesday |
| Day of the year | 18 of 365 | 18 of 365 | 18 of 365 | 18 of 366 |
| Days left in the year | 347 | 347 | 347 | 348 |
| ISO week | 3 | 3 | 3 | 3 |
| Quarter | Q1 | Q1 | Q1 | Q1 |
| Season (north) | Day 29 of winter | Day 29 of winter | Day 29 of winter | Day 29 of winter |
| Moon (US Eastern) | Waning gibbous | New moon | Waxing gibbous | Last quarter |
| US federal holiday | No | No | Martin Luther King Jr. Day | No |
| Other holidays | – | – | – | – |
Holidays on January 18
None of the 245 holidays and observances on this site is fixed to January 18.
Holidays that move with the calendar land on January 18 in some years from 2026 to 2035.
| Holiday or observance | Years on January 18 |
|---|---|
| Martin Luther King Jr. Day | 2027 |
Born on January 18
In most horoscope tables, January 18 falls under Capricorn, the sign that runs from December 22 to January 19.
The birthstone for January is the garnet on the American Gem Society list.
January 18 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 January 18, 1990 arrived on a Thursday, and one born on January 18, 2000 on a Tuesday. Weekends are shaded.
| Years | …0 | …1 | …2 | …3 | …4 | …5 | …6 | …7 | …8 | …9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 1950s | Wed | Thu | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun |
| 1960s | Mon | Wed | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat |
| 1970s | Sun | Mon | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu |
| 1980s | Fri | Sun | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed |
| 1990s | Thu | Fri | Sat | Mon | Tue | Wed | Thu | Sat | Sun | Mon |
| 2000s | Tue | Thu | Fri | Sat | Sun | Tue | Wed | Thu | Fri | Sun |
| 2010s | Mon | Tue | Wed | Fri | Sat | Sun | Mon | Wed | Thu | Fri |
| 2020s | Sat | Mon | Tue | Wed | Thu | Sat | Sun | Mon | Tue | Thu |
| 2030s | Fri | Sat | Sun | Tue | Wed | Thu | Fri | Sun | Mon | Tue |
| 2040s | Wed | Fri | Sat | Sun | Mon | Wed | Thu | Fri | Sat | Mon |
When January 18 is on the same weekday again
After 2027, January 18 is next a Monday in 2038. The next weekend January 18 is in 2031, on a Saturday.
| Day of the week | Next year after 2027 |
|---|---|
| Monday | 2038 |
| Tuesday | 2028 |
| Wednesday | 2034 |
| Thursday | 2029 |
| Friday | 2030 |
| Saturday | 2031 |
| Sunday | 2032 |
January 18 by year
| Year | Day of the week | Weekend or weekday |
|---|---|---|
| 2023 | Wednesday | Weekday |
| 2024 | Thursday | Weekday |
| 2025 | Saturday | Weekend |
| 2026 | Sunday | Weekend |
| 2027 | Monday | Weekday |
| 2028 | Tuesday | Weekday |
| 2029 | Thursday | Weekday |
| 2030 | Friday | Weekday |
| 2031 | Saturday | Weekend |
| 2032 | Sunday | Weekend |
| 2033 | Tuesday | Weekday |
| 2034 | Wednesday | Weekday |
Why the weekday changes
A common year is 365 days, one day more than 52 weeks. So January 18 moves on one weekday each year: Sunday in 2026, Monday in 2027. The jump is two days when February 29 comes in between, so January 18, 2029 is a Thursday, two on from 2028's Tuesday. Between 1901 and 2099, the whole pattern repeats every 28 years.
More about January 18 on this site
January 18 questions
What day of the week is January 18, 2027?
January 18, 2027 is a Monday. It is day 18 of the year and falls in ISO week 3.
Is January 18 a holiday?
None of the holidays on this site is fixed to January 18. In 2027 it is a US federal holiday, Martin Luther King Jr. Day. Some years it is Martin Luther King Jr. Day instead, as in 2027.
Cite this page
APA: ClockTotals. (2026, November 1). What Day of the Week Is January 18? https://clocktotals.com/what-day-is/january-18/
MLA: “What Day of the Week Is January 18?” ClockTotals, 1 Nov. 2026, clocktotals.com/what-day-is/january-18/.
Link (HTML): <a href="https://clocktotals.com/what-day-is/january-18/">What Day of the Week Is January 18?</a>