[#CBlockPolicyEstimator-GetFeeEstimatorFileAge]
= xref:CBlockPolicyEstimator.adoc[CBlockPolicyEstimator]::GetFeeEstimatorFileAge
:relfileprefix: ../
:mrdocs:

Calculates the age of the file, since last modified&period;

== Synopsis

Declared in `&lt;policy&sol;fees&sol;block&lowbar;policy&lowbar;estimator&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::chrono::hours
GetFeeEstimatorFileAge();
----

== Return Value

The time elapsed since the estimation file was last modified&period;


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