[#BloombergLP-bdlt-Datetime-2constructor-06]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/Datetime.adoc[Datetime]::Datetime
:relfileprefix: ../../../
:mrdocs:

Create a `Datetime` from year, month, day, and optional time fields&period;

== Synopsis

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

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

== Description

Create a `Datetime` object 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;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *year*
| year attribute
| *month*
| month attribute
| *day*
| day&hyphen;of&hyphen;month attribute
| *hour*
| hour attribute (default 0)
| *minute*
| minute attribute (default 0)
| *second*
| second attribute (default 0)
| *millisecond*
| millisecond attribute (default 0)
| *microsecond*
| microsecond attribute (default 0)
|===


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