Week 40 in 2001

WEEK
40

This week starts on Sunday, September 30, 2001 and ends on Saturday, October 6, 2001.

WEEK EUROPE & ISO
40

This week starts on Monday, October 1, 2001 and ends on Sunday, October 7, 2001.

Week 40 of 2001 begins on October 1, 2001 and ends on October 7, 2001. It covers days 274 to 280 of the year and falls in quarter 4.

Weeks since this week: 1305

Week 40 of 2001 at a glance

Starts (Monday)October 1, 2001
Ends (Sunday)October 7, 2001
US week (Sunday to Saturday)40 (September 30, 2001)
MonthOctober
QuarterQ4
Days of the year274–280
Year completed at the end of this week76.7%
Weeks left in 2001 after this week12
Weeks in 200152
Even or odd weekEven

Calendar for October 2001

October 2001
SuMoTuWeThFrSa
Week 40123456
Week 4178910111213
Week 4214151617181920
Week 4321222324252627
Week 4428293031
USA Calendar

All Weeks in 2001:

Past & Future Week Number 40:

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 40 of 2001. It runs from September 30, 2001 to October 6, 2001.

Even and odd weeks

Week 40 is an even week. Even and odd week numbers are used for alternating schedules such as shift rotas, school timetables, custody arrangements and waste collection.

Week 40 in other years

FromTo
Week 40 in 1999October 4, 1999October 10, 1999
Week 40 in 2000October 2, 2000October 8, 2000
Week 40 in 2002September 30, 2002October 6, 2002
Week 40 in 2003September 29, 2003October 5, 2003

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 2001 began on January 1, 2001. 2001 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 40 of 2001 start and end?

Week 40 of 2001 starts on October 1, 2001 and ends on October 7, 2001 (ISO 8601, Monday to Sunday).

Which month is week 40 of 2001 in?

Week 40 of 2001 is in October.

What dates are in week 40 of 2001?

October 1, 2001, October 2, 2001, October 3, 2001, October 4, 2001, October 5, 2001, October 6, 2001, and October 7, 2001

How many weeks does 2001 have?

2001 has 52 ISO weeks.

Is week 40 an even or odd week?

Week 40 is an even 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 40 of 2001. It runs from September 30, 2001 to October 6, 2001.