IRIS Toolbox Reference Manual

## weeksinyear

Number of weeks in year

#### Syntax

    N = weeksinyear(Year)

#### Input arguments

- `Year` [ numeric ] - Year.

#### Output arguments

- `N` [ numeric ] - Number of weeks in `Year`.

#### Description

The number of weeks in a year is either `52` or `53`, and complies with the definition of the first week in a year in ISO 8601. The first week of a year is the one that contains the 4th day of January (in other words, has most of its days in that year).

#### Example

    weeksinyear(2000:2010)
    ans =
        52    52    52    52    53    52    52    52    52    53    52

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