Week 40 in 2004

WEEK
40

This week starts on Sunday, September 26, 2004 and ends on Saturday, October 2, 2004.

WEEK EUROPE & ISO
40

This week starts on Monday, September 27, 2004 and ends on Sunday, October 3, 2004.

Week 40 of 2004 begins on September 27, 2004 and ends on October 3, 2004. It covers days 271 to 277 of the year and falls in quarter 3.

Weeks since this week: 1148

Week 40 of 2004 at a glance

Starts (Monday)September 27, 2004
Ends (Sunday)October 3, 2004
US week (Sunday to Saturday)40 (September 26, 2004)
MonthSeptember / October
QuarterQ3
Days of the year271–277
Year completed at the end of this week75.7%
Weeks left in 2004 after this week13
Weeks in 200453
Even or odd weekEven

Calendar for September 2004

September 2004
SuMoTuWeThFrSa
Week 361234
Week 37567891011
Week 3812131415161718
Week 3919202122232425
Week 402627282930
USA Calendar

Download Calendar in printable A4 PDF

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  • Print Full Year 2004 Calendar (EU/ISO Version) Open calendar PDF in new window

    • All Weeks in 2004:

    Week 1 in 2004 Week 2 in 2004 Week 3 in 2004 Week 4 in 2004 Week 5 in 2004 Week 6 in 2004 Week 7 in 2004 Week 8 in 2004 Week 9 in 2004 Week 10 in 2004 Week 11 in 2004 Week 12 in 2004 Week 13 in 2004 Week 14 in 2004 Week 15 in 2004 Week 16 in 2004 Week 17 in 2004 Week 18 in 2004 Week 19 in 2004 Week 20 in 2004 Week 21 in 2004 Week 22 in 2004 Week 23 in 2004 Week 24 in 2004 Week 25 in 2004 Week 26 in 2004 Week 27 in 2004 Week 28 in 2004 Week 29 in 2004 Week 30 in 2004 Week 31 in 2004 Week 32 in 2004 Week 33 in 2004 Week 34 in 2004 Week 35 in 2004 Week 36 in 2004 Week 37 in 2004 Week 38 in 2004 Week 39 in 2004 Week 40 in 2004 Week 41 in 2004 Week 42 in 2004 Week 43 in 2004 Week 44 in 2004 Week 45 in 2004 Week 46 in 2004 Week 47 in 2004 Week 48 in 2004 Week 49 in 2004 Week 50 in 2004 Week 51 in 2004 Week 52 in 2004 Week 53 in 2004

    Past & Future Week Number 40:

    Week 40 in 2016 Week 40 in 2017 Week 40 in 2018 Week 40 in 2019 Week 40 in 2020 Week 40 in 2021 Week 40 in 2022 Week 40 in 2023 Week 40 in 2024 Week 40 in 2025 Week 40 in 2026 Week 40 in 2027 Week 40 in 2028 Week 40 in 2029 Week 40 in 2030 Week 40 in 2031 Week 40 in 2032 Week 40 in 2033 Week 40 in 2034 Week 40 in 2035 Week 40 in 2036

    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 2004. It runs from September 26, 2004 to October 2, 2004.

    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 2002September 30, 2002October 6, 2002
    Week 40 in 2003September 29, 2003October 5, 2003
    Week 40 in 2005October 3, 2005October 9, 2005
    Week 40 in 2006October 2, 2006October 8, 2006

    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 2004 began on December 29, 2003. 2004 has 53 ISO weeks, because 1 January 2004 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 40 of 2004 start and end?

    Week 40 of 2004 starts on September 27, 2004 and ends on October 3, 2004 (ISO 8601, Monday to Sunday).

    Which month is week 40 of 2004 in?

    Week 40 of 2004 starts in September and ends in October.

    What dates are in week 40 of 2004?

    September 27, 2004, September 28, 2004, September 29, 2004, September 30, 2004, October 1, 2004, October 2, 2004, and October 3, 2004

    How many weeks does 2004 have?

    2004 has 53 ISO weeks, because 1 January 2004 falls on a Thursday.

    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 2004. It runs from September 26, 2004 to October 2, 2004.