Week 21 in 505

WEEK
21

This week starts on Sunday, May 17, 505 and ends on Saturday, May 23, 505.

WEEK EUROPE & ISO
21

This week starts on Monday, May 18, 505 and ends on Sunday, May 24, 505.

Week 21 of 505 begins on May 18, 505 and ends on May 24, 505. It covers days 138 to 144 of the year and falls in quarter 2.

Weeks since this week: 79381

Week 21 of 505 at a glance

Starts (Monday)May 18, 505
Ends (Sunday)May 24, 505
US week (Sunday to Saturday)21 (May 17, 505)
MonthMay
QuarterQ2
Days of the year138–144
Year completed at the end of this week39.5%
Weeks left in 505 after this week32
Weeks in 50553
Even or odd weekOdd

Calendar for May 505

May 505
SuMoTuWeThFrSa
Week 1812
Week 193456789
Week 2010111213141516
Week 2117181920212223
Week 2224252627282930
Week 2331
USA Calendar

Download Calendar in printable A4 PDF

  • Print May 505 Calendar Open calendar PDF in new window (US version)
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  • Print Full Year 505 Calendar (US version) Open calendar PDF in new window
  • Print Full Year 505 Calendar (EU/ISO Version) Open calendar PDF in new window

    • All Weeks in 505:

    Week 1 in 505 Week 2 in 505 Week 3 in 505 Week 4 in 505 Week 5 in 505 Week 6 in 505 Week 7 in 505 Week 8 in 505 Week 9 in 505 Week 10 in 505 Week 11 in 505 Week 12 in 505 Week 13 in 505 Week 14 in 505 Week 15 in 505 Week 16 in 505 Week 17 in 505 Week 18 in 505 Week 19 in 505 Week 20 in 505 Week 21 in 505 Week 22 in 505 Week 23 in 505 Week 24 in 505 Week 25 in 505 Week 26 in 505 Week 27 in 505 Week 28 in 505 Week 29 in 505 Week 30 in 505 Week 31 in 505 Week 32 in 505 Week 33 in 505 Week 34 in 505 Week 35 in 505 Week 36 in 505 Week 37 in 505 Week 38 in 505 Week 39 in 505 Week 40 in 505 Week 41 in 505 Week 42 in 505 Week 43 in 505 Week 44 in 505 Week 45 in 505 Week 46 in 505 Week 47 in 505 Week 48 in 505 Week 49 in 505 Week 50 in 505 Week 51 in 505 Week 52 in 505 Week 53 in 505

    Past & Future Week Number 21:

    Week 21 in 2016 Week 21 in 2017 Week 21 in 2018 Week 21 in 2019 Week 21 in 2020 Week 21 in 2021 Week 21 in 2022 Week 21 in 2023 Week 21 in 2024 Week 21 in 2025 Week 21 in 2026 Week 21 in 2027 Week 21 in 2028 Week 21 in 2029 Week 21 in 2030 Week 21 in 2031 Week 21 in 2032 Week 21 in 2033 Week 21 in 2034 Week 21 in 2035 Week 21 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 21 of 505. It runs from May 17, 505 to May 23, 505.

    Even and odd weeks

    Week 21 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 21 in other years

    FromTo
    Week 21 in 503May 21, 503May 27, 503
    Week 21 in 504May 19, 504May 25, 504
    Week 21 in 506May 24, 506May 30, 506
    Week 21 in 507May 23, 507May 29, 507

    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 505 began on December 29, 504. 505 has 53 ISO weeks, because 1 January 505 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 21 of 505 start and end?

    Week 21 of 505 starts on May 18, 505 and ends on May 24, 505 (ISO 8601, Monday to Sunday).

    Which month is week 21 of 505 in?

    Week 21 of 505 is in May.

    What dates are in week 21 of 505?

    May 18, 505, May 19, 505, May 20, 505, May 21, 505, May 22, 505, May 23, 505, and May 24, 505

    How many weeks does 505 have?

    505 has 53 ISO weeks, because 1 January 505 falls on a Thursday.

    Is week 21 an even or odd week?

    Week 21 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 21 of 505. It runs from May 17, 505 to May 23, 505.