[#BloombergLP-bdlt-ProlepticDateImpUtil-serialToDay]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/ProlepticDateImpUtil.adoc[ProlepticDateImpUtil]::serialToDay
:relfileprefix: ../../../
:mrdocs:

Return the day of the month for the specified serial date&period;

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
int
serialToDay(int serialDay);
----

== Description

Return the day (of the month) of the date value indicated by the specified `serialDay`&period; The behavior is undefined unless `isValidSerial(serialDay)` returns `true`&period;

== Return Value

day of month

== Parameters

[cols="1,4"]
|===
| Name| Description
| *serialDay*
| serial date to convert
|===


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