Flotchart timezone parameter not working with dual y axis chart

[Brian Hooke]

I use a flotchart like this one with dual y-axis: https://www.flotcharts.org/flot/examples/axes-multiple/

My problem is the usual 'epochtime: Country/City' parameter isn't having any effect on my graph's display (eg as 'timezone: Australia/Sydney' or 'timezone: America/Chicago'). GMT 0 time is always displayed.

The x-axis parameter must be set to 'xaxes' (being a dual y-axis 'yaxes' graph) & I suspect this is the issue?

Has anyone had any luck converting epochtime to local time using dual y-axis flotcharts?

xaxes: [{

mode: "time",

timeBase: "milliseconds",

timezone: "America/Chicago",

timeformat: "%h:%M %P"

}],