Week 39 in 1980

WEEK
39

This week starts on Sunday, September 21, 1980 and ends on Saturday, September 27, 1980.

WEEK EUROPE & ISO
39

This week starts on Monday, September 22, 1980 and ends on Sunday, September 28, 1980.

Week 39 of 1980 begins on September 22, 1980 and ends on September 28, 1980. It covers days 266 to 272 of the year and falls in quarter 3.

Weeks since this week: 2402

Week 39 of 1980 at a glance

Starts (Monday)September 22, 1980
Ends (Sunday)September 28, 1980
US week (Sunday to Saturday)39 (September 21, 1980)
MonthSeptember
QuarterQ3
Days of the year266–272
Year completed at the end of this week74.3%
Weeks left in 1980 after this week13
Weeks in 198052
Even or odd weekOdd

Calendar for September 1980

September 1980
SuMoTuWeThFrSa
Week 36123456
Week 3778910111213
Week 3814151617181920
Week 3921222324252627
Week 40282930
USA Calendar

Download Calendar in printable A4 PDF

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  • Print Full Year 1980 Calendar (EU/ISO Version) Open calendar PDF in new window

    • All Weeks in 1980:

    Week 1 in 1980 Week 2 in 1980 Week 3 in 1980 Week 4 in 1980 Week 5 in 1980 Week 6 in 1980 Week 7 in 1980 Week 8 in 1980 Week 9 in 1980 Week 10 in 1980 Week 11 in 1980 Week 12 in 1980 Week 13 in 1980 Week 14 in 1980 Week 15 in 1980 Week 16 in 1980 Week 17 in 1980 Week 18 in 1980 Week 19 in 1980 Week 20 in 1980 Week 21 in 1980 Week 22 in 1980 Week 23 in 1980 Week 24 in 1980 Week 25 in 1980 Week 26 in 1980 Week 27 in 1980 Week 28 in 1980 Week 29 in 1980 Week 30 in 1980 Week 31 in 1980 Week 32 in 1980 Week 33 in 1980 Week 34 in 1980 Week 35 in 1980 Week 36 in 1980 Week 37 in 1980 Week 38 in 1980 Week 39 in 1980 Week 40 in 1980 Week 41 in 1980 Week 42 in 1980 Week 43 in 1980 Week 44 in 1980 Week 45 in 1980 Week 46 in 1980 Week 47 in 1980 Week 48 in 1980 Week 49 in 1980 Week 50 in 1980 Week 51 in 1980 Week 52 in 1980

    Past & Future Week Number 39:

    Week 39 in 2016 Week 39 in 2017 Week 39 in 2018 Week 39 in 2019 Week 39 in 2020 Week 39 in 2021 Week 39 in 2022 Week 39 in 2023 Week 39 in 2024 Week 39 in 2025 Week 39 in 2026 Week 39 in 2027 Week 39 in 2028 Week 39 in 2029 Week 39 in 2030 Week 39 in 2031 Week 39 in 2032 Week 39 in 2033 Week 39 in 2034 Week 39 in 2035 Week 39 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 39 of 1980. It runs from September 21, 1980 to September 27, 1980.

    Even and odd weeks

    Week 39 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 39 in other years

    FromTo
    Week 39 in 1978September 25, 1978October 1, 1978
    Week 39 in 1979September 24, 1979September 30, 1979
    Week 39 in 1981September 21, 1981September 27, 1981
    Week 39 in 1982September 27, 1982October 3, 1982

    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 1980 began on December 31, 1979. 1980 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 39 of 1980 start and end?

    Week 39 of 1980 starts on September 22, 1980 and ends on September 28, 1980 (ISO 8601, Monday to Sunday).

    Which month is week 39 of 1980 in?

    Week 39 of 1980 is in September.

    What dates are in week 39 of 1980?

    September 22, 1980, September 23, 1980, September 24, 1980, September 25, 1980, September 26, 1980, September 27, 1980, and September 28, 1980

    How many weeks does 1980 have?

    1980 has 52 ISO weeks.

    Is week 39 an even or odd week?

    Week 39 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 39 of 1980. It runs from September 21, 1980 to September 27, 1980.