I have this simple Plot with some SP500 data

How do I put the months only on the x-axis like examples from Plot : Scale

```
Plot.plot( {x: {type: "time", domain: [startDate, endDate]}, grid: true})
```

From the above notebook, all the dates are all too close to each other…

I figure out I need a domain for the startDate ( array 1st entry ) and endDate ( array last entry )

but how to I mapped the sp500.date to the x-axis in a nice month format ??

Thanks