matplotlib
diff --git a/‎lib/matplotlib/dates.py
Copy file name to clipboardExpand all lines: lib/matplotlib/dates.py
+5Lines changed: 5 additions & 0 deletions b/‎lib/matplotlib/dates.py
Copy file name to clipboardExpand all lines: lib/matplotlib/dates.py
+5Lines changed: 5 additions & 0 deletions
@@ -222,6 +222,10 @@ def _to_ordinalf(dt):
         dt = dt.astimezone(UTC)
         tzi = UTC
 
+    if isinstance(dt, datetime.timedelta):
+        base = dt / datetime.timedelta(days=1)
+        return base
+
     base = float(dt.toordinal())
 
     # If it's sufficiently datetime-like, it will have a `date()` method
@@ -405,6 +409,7 @@ def date2num(d):
     Gregorian calendar is assumed; this is not universal practice.
     For details see the module docstring.
     """
+
     if hasattr(d, "values"):
         # this unpacks pandas series or dataframes...
         d = d.values