Week 1 in 999

WEEK
1

This week starts on Sunday, December 30, 998 and ends on Saturday, January 5, 999.

WEEK EUROPE & ISO
1

This week starts on Monday, December 31, 998 and ends on Sunday, January 6, 999.

Week 1 of 999 spans the turn of the year: it begins on December 31, 998 and ends on January 6, 999.

Weeks since this week: 53625

Week 1 of 999 at a glance

Starts (Monday)December 31, 998
Ends (Sunday)January 6, 999
US week (Sunday to Saturday)1 (December 30, 998)
MonthDecember / January
QuarterQ1
Year completed at the end of this week1.6%
Weeks left in 999 after this week51
Weeks in 99952
Even or odd weekOdd

Calendar for December 999

December 999
SuMoTuWeThFrSa
Week 491234567
Week 50891011121314
Week 5115161718192021
Week 5222232425262728
Week 1293031
USA Calendar

Download Calendar in printable A4 PDF

  • Print December 999 Calendar Open calendar PDF in new window (US version)
  • Print December 999 Calendar Open calendar PDF in new window (EU/ISO Version)
  • Print Full Year 999 Calendar (US version) Open calendar PDF in new window
  • Print Full Year 999 Calendar (EU/ISO Version) Open calendar PDF in new window

    • All Weeks in 999:

    Week 1 in 999 Week 2 in 999 Week 3 in 999 Week 4 in 999 Week 5 in 999 Week 6 in 999 Week 7 in 999 Week 8 in 999 Week 9 in 999 Week 10 in 999 Week 11 in 999 Week 12 in 999 Week 13 in 999 Week 14 in 999 Week 15 in 999 Week 16 in 999 Week 17 in 999 Week 18 in 999 Week 19 in 999 Week 20 in 999 Week 21 in 999 Week 22 in 999 Week 23 in 999 Week 24 in 999 Week 25 in 999 Week 26 in 999 Week 27 in 999 Week 28 in 999 Week 29 in 999 Week 30 in 999 Week 31 in 999 Week 32 in 999 Week 33 in 999 Week 34 in 999 Week 35 in 999 Week 36 in 999 Week 37 in 999 Week 38 in 999 Week 39 in 999 Week 40 in 999 Week 41 in 999 Week 42 in 999 Week 43 in 999 Week 44 in 999 Week 45 in 999 Week 46 in 999 Week 47 in 999 Week 48 in 999 Week 49 in 999 Week 50 in 999 Week 51 in 999 Week 52 in 999

    Past & Future Week Number 1:

    Week 1 in 2016 Week 1 in 2017 Week 1 in 2018 Week 1 in 2019 Week 1 in 2020 Week 1 in 2021 Week 1 in 2022 Week 1 in 2023 Week 1 in 2024 Week 1 in 2025 Week 1 in 2026 Week 1 in 2027 Week 1 in 2028 Week 1 in 2029 Week 1 in 2030 Week 1 in 2031 Week 1 in 2032 Week 1 in 2033 Week 1 in 2034 Week 1 in 2035 Week 1 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 1 of 999. It runs from December 30, 998 to January 5, 999.

    Even and odd weeks

    Week 1 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 1 in other years

    FromTo
    Week 1 in 997January 2, 997January 8, 997
    Week 1 in 998January 1, 998January 7, 998
    Week 1 in 1000December 30, 999January 5, 1000
    Week 1 in 1001December 29, 1000January 4, 1001

    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 999 began on December 31, 998. 999 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 1 of 999 start and end?

    Week 1 of 999 starts on December 31, 998 and ends on January 6, 999 (ISO 8601, Monday to Sunday).

    Which month is week 1 of 999 in?

    Week 1 of 999 starts in December and ends in January.

    What dates are in week 1 of 999?

    December 31, 998, January 1, 999, January 2, 999, January 3, 999, January 4, 999, January 5, 999, and January 6, 999

    How many weeks does 999 have?

    999 has 52 ISO weeks.

    Is week 1 an even or odd week?

    Week 1 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 1 of 999. It runs from December 30, 998 to January 5, 999.