[#BloombergLP-bdlt-operator_minus-0c]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::operator‐
:relfileprefix: ../../
:mrdocs:

Return the interval between two datetimes.

== Synopsis

Declared in `<bdlt_datetime.h>`

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

== Description

Return a `DatetimeInterval` object having a value that is the difference between the specified `lhs` (`Datetime`) and the specified `rhs` (`Datetime`). If the `hour` attribute of either operand is 24, the result is the same as if that `hour` attribute is 0. The behavior is undefined unless the resulting value is in the valid range for a `DatetimeInterval` object.

== Return Value

a `DatetimeInterval` that is the difference between the operands

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lhs*
| left‐hand datetime operand
| *rhs*
| right‐hand datetime operand
|===


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