Wrong Dates shown in commit history

Today I merged a bitbucket repo into another repo and preserved the commit history. I noticed that all the commits I pushed up had the wrong dates. It appears as if they were only recently committed. However, the raw commits have the correct dates.

Is this the intended behavior? I've included a screenshot of the commit history and the text from the raw commit.

Raw commit text:

From 5cea4e17dc21ff9850d49cfdf02ca5aa214cc6a3 Mon Sep 17 00:00:00 2001
From: Name Hidden <namehidden@company.com>
Date: Fri, 13 Jan 2017 10:40:19 -0500
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