Week 11 in 231

WEEK
12

This week starts on Sunday, March 13, 231 and ends on Saturday, March 19, 231.

WEEK EUROPE & ISO
11

This week starts on Monday, March 14, 231 and ends on Sunday, March 20, 231.

Week 11 of 231 begins on March 14, 231 and ends on March 20, 231. It covers days 73 to 79 of the year and falls in quarter 1.

Weeks since this week: 93687

Week 11 of 231 at a glance

Starts (Monday)March 14, 231
Ends (Sunday)March 20, 231
US week (Sunday to Saturday)12 (March 13, 231)
MonthMarch
QuarterQ1
Days of the year73–79
Year completed at the end of this week21.6%
Weeks left in 231 after this week41
Weeks in 23152
Even or odd weekOdd

Calendar for March 231

March 231
SuMoTuWeThFrSa
Week 912345
Week 106789101112
Week 1113141516171819
Week 1220212223242526
Week 132728293031
USA Calendar

All Weeks in 231:

Past & Future Week Number 11:

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 12 of 231. It runs from March 13, 231 to March 19, 231.

Even and odd weeks

Week 11 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 11 in other years

FromTo
Week 11 in 229March 9, 229March 15, 229
Week 11 in 230March 15, 230March 21, 230
Week 11 in 232March 12, 232March 18, 232
Week 11 in 233March 11, 233March 17, 233

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 231 began on January 3, 231. 231 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 11 of 231 start and end?

Week 11 of 231 starts on March 14, 231 and ends on March 20, 231 (ISO 8601, Monday to Sunday).

Which month is week 11 of 231 in?

Week 11 of 231 is in March.

What dates are in week 11 of 231?

March 14, 231, March 15, 231, March 16, 231, March 17, 231, March 18, 231, March 19, 231, and March 20, 231

How many weeks does 231 have?

231 has 52 ISO weeks.

Is week 11 an even or odd week?

Week 11 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 12 of 231. It runs from March 13, 231 to March 19, 231.