pre rebase

jklymak · jklymak · commit d75698e1824c · 2018-03-25T20:14:18.000-07:00
diff --git a/lib/matplotlib/dates.py b/lib/matplotlib/dates.py
@@ -1338,9 +1338,12 @@ def get_locator(self, dmin, dmax):
             self._freq = freq
 
             if self._byranges[i] and self.interval_multiples:
-                if i == 2 and interval == 14:
-                    # special case for monthday: Just tick 1 and 15:
-                    byranges[i] = range(1, 16, 14)
+                if i == 2:
+                    # special cases for monthday:
+                    if interval == 14:
+                        byranges[i] = [1, 15]
+                    if interval == 3:
+                        byranges[i] = range(1, 29, 3)
                 else:
                     byranges[i] = self._byranges[i][::interval]
                 interval = 1
