From da0ac53324e6d63d635f50eb5be1d801c8293c21 Mon Sep 17 00:00:00 2001
From: Tom Pohl <thomas.pohl@gmail.com>
Date: Wed, 22 Jul 2020 17:23:58 +0200
Subject: [PATCH] fix: allow for timestamps before UNIX epoch (#1)

---
 msgpack/ext.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/msgpack/ext.py b/msgpack/ext.py
index 8341c68b..4eb9dd65 100644
--- a/msgpack/ext.py
+++ b/msgpack/ext.py
@@ -178,7 +178,9 @@ def to_datetime(self):
 
         :rtype: datetime.
         """
-        return datetime.datetime.fromtimestamp(self.to_unix(), _utc)
+        return datetime.datetime.fromtimestamp(0, _utc) + datetime.timedelta(
+            seconds=self.to_unix()
+        )
 
     @staticmethod
     def from_datetime(dt):