Week 4 in 2001

WEEK
4

This week starts on Sunday, January 21, 2001 and ends on Saturday, January 27, 2001.

WEEK EUROPE & ISO
4

This week starts on Monday, January 22, 2001 and ends on Sunday, January 28, 2001.

Week 4 of 2001 begins on January 22, 2001 and ends on January 28, 2001. It covers days 22 to 28 of the year and falls in quarter 1.

Weeks since this week: 1340

Week 4 of 2001 at a glance

Starts (Monday)January 22, 2001
Ends (Sunday)January 28, 2001
US week (Sunday to Saturday)4 (January 21, 2001)
MonthJanuary
QuarterQ1
Days of the year22–28
Year completed at the end of this week7.7%
Weeks left in 2001 after this week48
Weeks in 200152
Even or odd weekEven

Calendar for January 2001

January 2001
SuMoTuWeThFrSa
Week 1123456
Week 278910111213
Week 314151617181920
Week 421222324252627
Week 528293031
USA Calendar

Download Calendar in printable A4 PDF

  • Print January 2001 Calendar Open calendar PDF in new window (US version)
  • Print January 2001 Calendar Open calendar PDF in new window (EU/ISO Version)
  • Print Full Year 2001 Calendar (US version) Open calendar PDF in new window
  • Print Full Year 2001 Calendar (EU/ISO Version) Open calendar PDF in new window

    • All Weeks in 2001:

    Week 1 in 2001 Week 2 in 2001 Week 3 in 2001 Week 4 in 2001 Week 5 in 2001 Week 6 in 2001 Week 7 in 2001 Week 8 in 2001 Week 9 in 2001 Week 10 in 2001 Week 11 in 2001 Week 12 in 2001 Week 13 in 2001 Week 14 in 2001 Week 15 in 2001 Week 16 in 2001 Week 17 in 2001 Week 18 in 2001 Week 19 in 2001 Week 20 in 2001 Week 21 in 2001 Week 22 in 2001 Week 23 in 2001 Week 24 in 2001 Week 25 in 2001 Week 26 in 2001 Week 27 in 2001 Week 28 in 2001 Week 29 in 2001 Week 30 in 2001 Week 31 in 2001 Week 32 in 2001 Week 33 in 2001 Week 34 in 2001 Week 35 in 2001 Week 36 in 2001 Week 37 in 2001 Week 38 in 2001 Week 39 in 2001 Week 40 in 2001 Week 41 in 2001 Week 42 in 2001 Week 43 in 2001 Week 44 in 2001 Week 45 in 2001 Week 46 in 2001 Week 47 in 2001 Week 48 in 2001 Week 49 in 2001 Week 50 in 2001 Week 51 in 2001 Week 52 in 2001

    Past & Future Week Number 4:

    Week 4 in 2016 Week 4 in 2017 Week 4 in 2018 Week 4 in 2019 Week 4 in 2020 Week 4 in 2021 Week 4 in 2022 Week 4 in 2023 Week 4 in 2024 Week 4 in 2025 Week 4 in 2026 Week 4 in 2027 Week 4 in 2028 Week 4 in 2029 Week 4 in 2030 Week 4 in 2031 Week 4 in 2032 Week 4 in 2033 Week 4 in 2034 Week 4 in 2035 Week 4 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 4 of 2001. It runs from January 21, 2001 to January 27, 2001.

    Even and odd weeks

    Week 4 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 4 in other years

    FromTo
    Week 4 in 1999January 25, 1999January 31, 1999
    Week 4 in 2000January 24, 2000January 30, 2000
    Week 4 in 2002January 21, 2002January 27, 2002
    Week 4 in 2003January 20, 2003January 26, 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 4 of 2001 start and end?

    Week 4 of 2001 starts on January 22, 2001 and ends on January 28, 2001 (ISO 8601, Monday to Sunday).

    Which month is week 4 of 2001 in?

    Week 4 of 2001 is in January.

    What dates are in week 4 of 2001?

    January 22, 2001, January 23, 2001, January 24, 2001, January 25, 2001, January 26, 2001, January 27, 2001, and January 28, 2001

    How many weeks does 2001 have?

    2001 has 52 ISO weeks.

    Is week 4 an even or odd week?

    Week 4 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 4 of 2001. It runs from January 21, 2001 to January 27, 2001.