Correct tz types and description

kdpenner · kdpenner · commit 2eaec11ceecd · 2026-03-09T23:22:23.000-04:00
diff --git a/lib/matplotlib/dates.py b/lib/matplotlib/dates.py
@@ -1542,8 +1542,9 @@ def __init__(self, byweekday=1, interval=1, tz=None):
         interval : int, default: 1
             The interval between each iteration. For example, if
             ``interval=2``, mark every second occurrence.
-        tz : str or `~datetime.tzinfo`, default: :rc:`timezone`
-            Ticks timezone. If a string, *tz* is passed to `dateutil.tz`.
+        tz : str, `~datetime.tzinfo`, or `None`, default: `None`
+            Ticks timezone. If a string, *tz* is passed to `dateutil.tz`. If
+            `None`, retrieve :rc:`timezone`.
         """
         rule = rrulewrapper(DAILY, byweekday=byweekday,
                             interval=interval, **self.hms0d)
