[#BloombergLP-bdlt-EpochUtil-TimeT64]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlt.adoc[bdlt]::xref:BloombergLP/bdlt/EpochUtil.adoc[EpochUtil]::TimeT64
:relfileprefix: ../../../
:mrdocs:

Alias for a 64&hyphen;bit integer counting UTC seconds from the epoch&period;

== Synopsis

Declared in `&lt;bdlt&lowbar;epochutil&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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typedef xref:BloombergLP/bsls/Types/Int64.adoc[bsls::Types::Int64] TimeT64;
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== Description

`TimeT64` is an alias for a 64&hyphen;bit integral type representing seconds from the epoch in UTC&period; Note that, in contrast with `bsl&colon;&colon;time&lowbar;t`, this type can be used in conversions to and from `Datetime` values that are less than the epoch (corresponding to negative `TimeT64` values)&period;


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