matplotlib
diff --git a/‎lib/matplotlib/projections/polar.py
+9-3 b/‎lib/matplotlib/projections/polar.py
+9-3
diff --git a/‎lib/matplotlib/tests/baseline_images/test_axes/polar_theta_position.pdf
119 Bytes b/‎lib/matplotlib/tests/baseline_images/test_axes/polar_theta_position.pdf
119 Bytes
diff --git a/‎lib/matplotlib/tests/baseline_images/test_axes/polar_theta_position.png
3.22 KB b/‎lib/matplotlib/tests/baseline_images/test_axes/polar_theta_position.png
3.22 KB
@@ -664,12 +664,18 @@ def get_theta_offset(self):
         """
         return self._theta_offset.get_matrix()[0, 2]
 
-    def set_theta_zero_location(self, loc):
+    def set_theta_zero_location(self, loc, offset=0.0):
         """
         Sets the location of theta's zero.  (Calls set_theta_offset
         with the correct value in radians under the hood.)
 
-        May be one of "N", "NW", "W", "SW", "S", "SE", "E", or "NE".
+        loc : str
+            May be one of "N", "NW", "W", "SW", "S", "SE", "E", or "NE".
+
+        offset : float, optional
+            An offset in degrees to apply from the specified `loc`. **Note:**
+            this offset is *always* applied counter-clockwise regardless of
+            the direction setting.
         """
         mapping = {
             'N': np.pi * 0.5,
@@ -680,7 +686,7 @@ def set_theta_zero_location(self, loc):
             'SE': np.pi * 1.75,
             'E': 0,
             'NE': np.pi * 0.25 }
-        return self.set_theta_offset(mapping[loc])
+        return self.set_theta_offset(mapping[loc] + np.deg2rad(offset))
 
     def set_theta_direction(self, direction):
         """