Week 16 in 521

WEEK
16

This week starts on Sunday, April 13, 521 and ends on Saturday, April 19, 521.

WEEK EUROPE & ISO
16

This week starts on Monday, April 14, 521 and ends on Sunday, April 20, 521.

Week 16 of 521 begins on April 14, 521 and ends on April 20, 521. It covers days 104 to 110 of the year and falls in quarter 2.

Weeks since this week: 78551

Week 16 of 521 at a glance

Starts (Monday)April 14, 521
Ends (Sunday)April 20, 521
US week (Sunday to Saturday)16 (April 13, 521)
MonthApril
QuarterQ2
Days of the year104–110
Year completed at the end of this week30.1%
Weeks left in 521 after this week36
Weeks in 52152
Even or odd weekEven

Calendar for April 521

April 521
SuMoTuWeThFrSa
Week 1412345
Week 156789101112
Week 1613141516171819
Week 1720212223242526
Week 1827282930
USA Calendar

Download Calendar in printable A4 PDF

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  • Print Full Year 521 Calendar (EU/ISO Version) Open calendar PDF in new window

    • All Weeks in 521:

    Week 1 in 521 Week 2 in 521 Week 3 in 521 Week 4 in 521 Week 5 in 521 Week 6 in 521 Week 7 in 521 Week 8 in 521 Week 9 in 521 Week 10 in 521 Week 11 in 521 Week 12 in 521 Week 13 in 521 Week 14 in 521 Week 15 in 521 Week 16 in 521 Week 17 in 521 Week 18 in 521 Week 19 in 521 Week 20 in 521 Week 21 in 521 Week 22 in 521 Week 23 in 521 Week 24 in 521 Week 25 in 521 Week 26 in 521 Week 27 in 521 Week 28 in 521 Week 29 in 521 Week 30 in 521 Week 31 in 521 Week 32 in 521 Week 33 in 521 Week 34 in 521 Week 35 in 521 Week 36 in 521 Week 37 in 521 Week 38 in 521 Week 39 in 521 Week 40 in 521 Week 41 in 521 Week 42 in 521 Week 43 in 521 Week 44 in 521 Week 45 in 521 Week 46 in 521 Week 47 in 521 Week 48 in 521 Week 49 in 521 Week 50 in 521 Week 51 in 521 Week 52 in 521

    Past & Future Week Number 16:

    Week 16 in 2016 Week 16 in 2017 Week 16 in 2018 Week 16 in 2019 Week 16 in 2020 Week 16 in 2021 Week 16 in 2022 Week 16 in 2023 Week 16 in 2024 Week 16 in 2025 Week 16 in 2026 Week 16 in 2027 Week 16 in 2028 Week 16 in 2029 Week 16 in 2030 Week 16 in 2031 Week 16 in 2032 Week 16 in 2033 Week 16 in 2034 Week 16 in 2035 Week 16 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 16 of 521. It runs from April 13, 521 to April 19, 521.

    Even and odd weeks

    Week 16 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 16 in other years

    FromTo
    Week 16 in 519April 17, 519April 23, 519
    Week 16 in 520April 15, 520April 21, 520
    Week 16 in 522April 13, 522April 19, 522
    Week 16 in 523April 19, 523April 25, 523

    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 521 began on December 30, 520. 521 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 16 of 521 start and end?

    Week 16 of 521 starts on April 14, 521 and ends on April 20, 521 (ISO 8601, Monday to Sunday).

    Which month is week 16 of 521 in?

    Week 16 of 521 is in April.

    What dates are in week 16 of 521?

    April 14, 521, April 15, 521, April 16, 521, April 17, 521, April 18, 521, April 19, 521, and April 20, 521

    How many weeks does 521 have?

    521 has 52 ISO weeks.

    Is week 16 an even or odd week?

    Week 16 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 16 of 521. It runs from April 13, 521 to April 19, 521.