Week 40 in 172

WEEK
40

This week starts on Sunday, September 27, 172 and ends on Saturday, October 3, 172.

WEEK EUROPE & ISO
40

This week starts on Monday, September 28, 172 and ends on Sunday, October 4, 172.

Week 40 of 172 begins on September 28, 172 and ends on October 4, 172. It covers days 272 to 278 of the year and falls in quarter 3.

Weeks since this week: 96737

Week 40 of 172 at a glance

Starts (Monday)September 28, 172
Ends (Sunday)October 4, 172
US week (Sunday to Saturday)40 (September 27, 172)
MonthSeptember / October
QuarterQ3
Days of the year272–278
Year completed at the end of this week76.0%
Weeks left in 172 after this week13
Weeks in 17253
Even or odd weekEven

Calendar for September 172

September 172
SuMoTuWeThFrSa
Week 3612345
Week 376789101112
Week 3813141516171819
Week 3920212223242526
Week 4027282930
USA Calendar

Download Calendar in printable A4 PDF

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  • Print Full Year 172 Calendar (EU/ISO Version) Open calendar PDF in new window

    • All Weeks in 172:

    Week 1 in 172 Week 2 in 172 Week 3 in 172 Week 4 in 172 Week 5 in 172 Week 6 in 172 Week 7 in 172 Week 8 in 172 Week 9 in 172 Week 10 in 172 Week 11 in 172 Week 12 in 172 Week 13 in 172 Week 14 in 172 Week 15 in 172 Week 16 in 172 Week 17 in 172 Week 18 in 172 Week 19 in 172 Week 20 in 172 Week 21 in 172 Week 22 in 172 Week 23 in 172 Week 24 in 172 Week 25 in 172 Week 26 in 172 Week 27 in 172 Week 28 in 172 Week 29 in 172 Week 30 in 172 Week 31 in 172 Week 32 in 172 Week 33 in 172 Week 34 in 172 Week 35 in 172 Week 36 in 172 Week 37 in 172 Week 38 in 172 Week 39 in 172 Week 40 in 172 Week 41 in 172 Week 42 in 172 Week 43 in 172 Week 44 in 172 Week 45 in 172 Week 46 in 172 Week 47 in 172 Week 48 in 172 Week 49 in 172 Week 50 in 172 Week 51 in 172 Week 52 in 172 Week 53 in 172

    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 172. It runs from September 27, 172 to October 3, 172.

    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 170October 1, 170October 7, 170
    Week 40 in 171September 30, 171October 6, 171
    Week 40 in 173October 4, 173October 10, 173
    Week 40 in 174October 3, 174October 9, 174

    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 172 began on December 30, 171. 172 has 53 ISO weeks, because it is a leap year that starts on a Wednesday.

    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 172 start and end?

    Week 40 of 172 starts on September 28, 172 and ends on October 4, 172 (ISO 8601, Monday to Sunday).

    Which month is week 40 of 172 in?

    Week 40 of 172 starts in September and ends in October.

    What dates are in week 40 of 172?

    September 28, 172, September 29, 172, September 30, 172, October 1, 172, October 2, 172, October 3, 172, and October 4, 172

    How many weeks does 172 have?

    172 has 53 ISO weeks, because it is a leap year that starts on a Wednesday.

    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 172. It runs from September 27, 172 to October 3, 172.