[#BloombergLP-bdlt-operator_plus-0d]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::operator+
:relfileprefix: ../../
:mrdocs:

Return a `DatetimeInterval` object whose value is the sum of the specified `lhs` and `rhs` time intervals. The behavior is undefined unless the resulting time interval value is valid (i.e., the days field must not overflow a 32‐bit integer).

== Synopsis

Declared in `<bdlt_datetimeinterval.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:BloombergLP/bdlt/DatetimeInterval.adoc[bdlt::DatetimeInterval]
operator+(
    xref:BloombergLP/bdlt/DatetimeInterval.adoc[DatetimeInterval] const& lhs,
    xref:BloombergLP/bdlt/DatetimeInterval.adoc[DatetimeInterval] const& rhs);
----


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