Plotlyjs x values display

I created such a csv file with date containing only year and month, but the date is automatically read in the form yy-mm-01. (CSV v0.10.4, DataFrames v1.3.4).
But I succeeded to get displayed your format, on hover, using customdata and hovertemplate:

fig= Plot(scatter(x=df[!, :date], y= df[!, :GOOG], mode="markers", marker_size=16, 
                          customdata=df[:, :date], 
                          hovertemplate="(%{customdata|%Y-%m}, %{y})<extra></extra>"),
                          Layout(width=600, height=350))