[#BloombergLP-bdlt-Datetime-setYearDay]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Datetime.adoc[Datetime]::setYearDay
:relfileprefix: ../../../
:mrdocs:

Set the "date" part of this object to have the value represented by the specified `year` and `dayOfYear` attribute values. The behavior is undefined unless `year` and `dayOfYear` represent a valid `Date` value (i.e., `true == Date::isValidYearDay(year, dayOfYear)`). Note that this method has no effect on the "time" part of this object.

== Synopsis

Declared in `<bdlt_datetime.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
setYearDay(
    int year,
    int dayOfYear);
----


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