Week 3 in 2026

WEEK
3

This week starts on Sunday, January 11, 2026 and ends on Saturday, January 17, 2026.

WEEK EUROPE & ISO
3

This week starts on Monday, January 12, 2026 and ends on Sunday, January 18, 2026.

Week 3 of 2026 begins on January 12, 2026 and ends on January 18, 2026. It covers days 12 to 18 of the year and falls in quarter 1.

Weeks since this week: 39

Week 3 of 2026 at a glance

Starts (Monday)January 12, 2026
Ends (Sunday)January 18, 2026
US week (Sunday to Saturday)3 (January 11, 2026)
MonthJanuary
QuarterQ1
Days of the year12–18
Year completed at the end of this week4.9%
Weeks left in 2026 after this week50
Weeks in 202653
Even or odd weekOdd

All days in Week 3:

  • Monday, January 12, 2026
  • Tuesday, January 13, 2026
  • Wednesday, January 14, 2026
  • Thursday, January 15, 2026
  • Friday, January 16, 2026
  • Saturday, January 17, 2026
  • Sunday, January 18, 2026

Calendar for January 2026

January 2026
SuMoTuWeThFrSa
Week 1123
Week 245678910
Week 311121314151617
Week 418192021222324
Week 525262728293031
USA Calendar

All Weeks in 2026:

Past & Future Week 3:

US and ISO week numbers

In the US system, where weeks start on Sunday and week 1 is the week that contains 1 January, this is week 3 of 2026. It runs from January 11, 2026 to January 17, 2026.

Even and odd weeks

Week 3 is an odd week. Even and odd week numbers are used for alternating schedules such as shift rotas, school timetables, custody arrangements and waste collection.

Week 3 in other years

FromTo
Week 3 in 2024January 15, 2024January 21, 2024
Week 3 in 2025January 13, 2025January 19, 2025
Week 3 in 2027January 18, 2027January 24, 2027
Week 3 in 2028January 17, 2028January 23, 2028

How week numbers are counted

Most of the world numbers weeks according to the ISO 8601 standard. A week starts on Monday, and week 1 is the week that contains the first Thursday of the year, which is always the week that contains 4 January.

Week 1 of 2026 began on December 29, 2025. 2026 has 53 ISO weeks, because 1 January 2026 falls on a Thursday.

Because of this rule, the first days of January can belong to the last week of the previous year, and the last days of December can belong to week 1 of the next year.

In the United States, weeks usually start on Sunday and week 1 is the week that contains 1 January, so the US week number can differ from the ISO week number.

Find the week number of a date

Frequently Asked Questions (FAQ)

When does week 3 of 2026 start and end?

Week 3 of 2026 starts on January 12, 2026 and ends on January 18, 2026 (ISO 8601, Monday to Sunday).

Which month is week 3 of 2026 in?

Week 3 of 2026 is in January.

What dates are in week 3 of 2026?

January 12, 2026, January 13, 2026, January 14, 2026, January 15, 2026, January 16, 2026, January 17, 2026, and January 18, 2026

How many weeks does 2026 have?

2026 has 53 ISO weeks, because 1 January 2026 falls on a Thursday.

Is week 3 an even or odd week?

Week 3 is an odd week.

What is the US week number for this week?

In the US system, where weeks start on Sunday and week 1 is the week that contains 1 January, this is week 3 of 2026. It runs from January 11, 2026 to January 17, 2026.

Week 3 Overview

Week 3 of the year often marks a period of settling into the new year. The initial excitement of New Year's resolutions may start to wane, and people begin to find their rhythm. This week can be significant for various reasons, including notable events and observances. It's a time when many start to focus on practical goals and routines.

Summary of Week 3

Week 3 typically includes important dates and activities that set the tone for the rest of the year. Common themes during this week involve getting back to work or school, continuing with New Year's resolutions, and participating in specific holidays or observances. People generally approach this week with a mix of renewed energy and a sense of routine.

Major Themes of Week 3

Several themes are commonly associated with Week 3:

  • Resolutions and Goals: Many people continue working on their New Year's resolutions, whether it's improving health, learning new skills, or organizing their lives.
  • Routine and Productivity: As the holiday season fades, routines become more established. This week often sees a return to regular work or school schedules.
  • Reflection and Planning: It's a good time to reflect on the first two weeks of the year and adjust plans as needed.

Significant Historical Events and Observances

Week 3 has its share of historical events and observances that add to its significance:

  • Martin Luther King Jr. Day (USA): Celebrated on the third Monday of January, this federal holiday honors the civil rights leader's contributions and legacy.
  • Blue Monday: Often considered the most depressing day of the year, Blue Monday falls on the third Monday of January. It’s a day when people might feel the post-holiday blues.
  • National Hugging Day (USA): Observed on January 21st, this day encourages people to show affection and support through hugs.

Interesting Facts and Cultural Insights

Week 3 offers some intriguing facts and cultural insights:

  • Weather Patterns: In many parts of the world, Week 3 can be among the coldest weeks of the year, influencing activities and moods.
  • Diet and Exercise Trends: Gym memberships and healthy eating plans often see a spike in usage during this week as people strive to stick to their resolutions.
  • Historical Milestones: Significant events in history, such as the launch of the first Apple Macintosh computer on January 24, 1984, add to the week’s historical richness.

Activities and Practices for Week 3

Engaging in specific activities during Week 3 can help maintain momentum and bring a sense of accomplishment:

  1. Review and Adjust Goals: Take time to review your New Year's resolutions and make any necessary adjustments. This can help keep you on track and motivated.
  2. Participate in MLK Day Events: If you’re in the USA, consider participating in events or volunteer opportunities related to Martin Luther King Jr. Day. It’s a great way to honor his legacy and contribute to your community.
  3. Combat Blue Monday: Plan activities that boost your mood on Blue Monday. This could include spending time with loved ones, engaging in a favorite hobby, or practicing mindfulness.
  4. Embrace National Hugging Day: Use January 21st as an opportunity to show affection and support to those around you. A simple hug can make a big difference.
  5. Stay Active: Keep up with your exercise routine to maintain physical and mental health. Even short, daily workouts can have a positive impact.

Week 3 is a pivotal time to establish routines, reflect on goals, and participate in meaningful activities. By understanding its significance and engaging in relevant practices, you can make the most of this week and set a positive tone for the rest of the year.