[#BloombergLP-bdlt-Datetime-setDatetime-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Datetime.adoc[Datetime]::setDatetime
:relfileprefix: ../../../
:mrdocs:

Set the value of this object to a `Datetime` whose &quot;date&quot; part has the value represented by the specified `year`, `month`, and `day` attributes, and whose &quot;time&quot; part has the value represented by the optionally specified `hour`, `minute`, `second`, `millisecond`, and `microsecond` attributes&period; Unspecified trailing optional parameters default to 0&period; The behavior is undefined unless the eight attributes (collectively) represent a valid `Datetime` value (see `isValid`)&period;

== Synopsis

Declared in `&lt;bdlt&lowbar;datetime&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void
setDatetime(
    int year,
    int month,
    int day,
    int hour = 0,
    int minute = 0,
    int second = 0,
    int millisecond = 0,
    int microsecond = 0);
----


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