.. _functx_days-in-month:

====================
functx:days-in-month
==================== 

Number of days in the month

Description
~~~~~~~~~~~
The functx:days-in-month returns the number of days in the month of $date as an 
integer.

The $date argument must be castable to xs:date, meaning that it must have the 
type xs:date or xs:dateTime, or be an xs:string or untyped value of the form 
YYYY-MM-DD.

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   :header-rows: 1

   * - **Parameters**
     - **Description**
   * - date:date()
     - the date

Examples
~~~~~~~~
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   * - **XPath**
     - **Results**
   * - functx:days-in-month(xs:date('2004-01-23'))
     - 31
   * - functx:days-in-month(xs:dateTime('2004-02-15T12:00:13'))
     - 29
   * - functx:days-in-month('2005-02-15')
     - 28

Depends On
~~~~~~~~~~
* :ref:`functx_is-leap-year`.

See Also
~~~~~~~~

.. toctree::
   :titlesonly:
   :glob:

* :ref:`functx_last-day-of-month`.