[#BloombergLP-bdlt-PosixDateImpUtil-isValidSerial]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/PosixDateImpUtil.adoc[PosixDateImpUtil]::isValidSerial
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:mrdocs:

Return `true` if the specified `serialDay` represents a valid date value, and `false` otherwise. Note that valid date values are (as fully defined in the component‐level documentation) in the range `[ 1 .. 3652061 ]`.

== Synopsis

Declared in `<bdlt_posixdateimputil.h>`

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


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