[Solved]-ChartJS - rolling twenty minute view-Chart.js

duration property would help you to restrict view to a specific time limit. It accepts time in millisecods and for 20 minutes view you can configure it like below.

For more details, check plugin Configuration

realtime: {
    onRefresh: function(chart: any) {
            // eslint-disable-next-line functional/immutable-data
    },
    delay: 2000,
    duration: 1200000,
},