Week 1 in 321

WEEK
2

This week starts on Sunday, January 2, 321 and ends on Saturday, January 8, 321.

WEEK EUROPE & ISO
1

This week starts on Monday, January 3, 321 and ends on Sunday, January 9, 321.

Week 1 of 321 begins on January 3, 321 and ends on January 9, 321. It covers days 3 to 9 of the year and falls in quarter 1.

Weeks since this week: 89001

Week 1 of 321 at a glance

Starts (Monday)January 3, 321
Ends (Sunday)January 9, 321
US week (Sunday to Saturday)2 (January 2, 321)
MonthJanuary
QuarterQ1
Days of the year3–9
Year completed at the end of this week2.5%
Weeks left in 321 after this week51
Weeks in 32152
Even or odd weekOdd

Calendar for January 321

January 321
SuMoTuWeThFrSa
Week 531
Week 12345678
Week 29101112131415
Week 316171819202122
Week 423242526272829
Week 53031
USA Calendar

All Weeks in 321:

Past & Future Week Number 1:

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 2 of 321. It runs from January 2, 321 to January 8, 321.

Even and odd weeks

Week 1 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 1 in other years

FromTo
Week 1 in 319December 30, 318January 5, 319
Week 1 in 320December 29, 319January 4, 320
Week 1 in 322January 2, 322January 8, 322
Week 1 in 323January 1, 323January 7, 323

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 321 began on January 3, 321. 321 has 52 ISO weeks.

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 1 of 321 start and end?

Week 1 of 321 starts on January 3, 321 and ends on January 9, 321 (ISO 8601, Monday to Sunday).

Which month is week 1 of 321 in?

Week 1 of 321 is in January.

What dates are in week 1 of 321?

January 3, 321, January 4, 321, January 5, 321, January 6, 321, January 7, 321, January 8, 321, and January 9, 321

How many weeks does 321 have?

321 has 52 ISO weeks.

Is week 1 an even or odd week?

Week 1 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 2 of 321. It runs from January 2, 321 to January 8, 321.