diff --git a/bmsapp/reports/xyplot.py b/bmsapp/reports/xyplot.py
index 8a3f0dc0fc35413bc3feb1c7db382bf3c3cfff74..049ae88dce4e838b502a88bcdc238732f81574a5 100644
--- a/bmsapp/reports/xyplot.py
+++ b/bmsapp/reports/xyplot.py
@@ -60,7 +60,7 @@ class XYplot(basechart.BaseChart):
             if len(df_all):
 
                 # add a point name column to be used in the tooltip.
-                df_all['name'] = df_all.index.strftime('%Y-%m-%d %H:%M')
+                df_all['name'] = df_all.index.strftime('%a %m/%d/%y %H:%M')
 
                 # add a column identifying whether point is in occupied or unoccupied period.
                 resolution = self.occupied_resolution()