[#BloombergLP-bdlt-EpochUtil-convertToTimeT64-0a]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/EpochUtil.adoc[EpochUtil]::convertToTimeT64
:relfileprefix: ../../../
:mrdocs:

Return the relative time computed as the difference between the specified absolute `datetime` and the epoch. Note that `datetime` is assumed to use Coordinated Universal Time (UTC) as a reference.

== Synopsis

Declared in `<bdlt_epochutil.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
xref:BloombergLP/bdlt/EpochUtil/TimeT64.adoc[EpochUtil::TimeT64]
convertToTimeT64(xref:BloombergLP/bdlt/Datetime.adoc[Datetime] const& datetime);
----


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