[#BloombergLP-bdlt-DatetimeTz-isValid]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/DatetimeTz.adoc[DatetimeTz]::isValid
:relfileprefix: ../../../
:mrdocs:

Return `true` if the specified `localDatetime` and the specified time zone `offset` represent a valid `DatetimeTz` value, and `false` otherwise. A `localDatetime` and `offset` represent a valid `DatetimeTz` value if either `bdlt::Time() == localDatetime.time()` and `0 == offset`, or `bdlt::Time() != localDatetime.time()` and `offset` is in the range `( ‐1440 .. 1440 )`. Note that a `true` result from this function does not guarantee that `offset` corresponds to any geographical or historical time zone. Also note that a `true` result from this function does not guarantee that `localDatetime` itself is a valid `Datetime` object.

== Synopsis

Declared in `<bdlt_datetimetz.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
bool
isValid(
    xref:BloombergLP/bdlt/Datetime.adoc[Datetime] const& localDatetime,
    int offset);
----


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