Custom Ticks where Value is a time

[garrettporter]

I am looking to set a custom tick for the start time and a custom tick for the end time, with no ticks between them. The problem is that a Tick value is type float64. How would I set ticks at specific times?

graph := chart.Chart{

	XAxis: chart.XAxis{
		ValueFormatter: chart.TimeValueFormatterWithFormat("Jan 2, 2006 15:04 MST"),

		// How do I set custom ticks to time? Value is type float64.
		Ticks: []chart.Tick{
			{Value: time.Now().AddDate(0, 0, -10) Label: "then"},
			{Value: time.Now(), Label: "now"},
		},
	},

	Series: []chart.Series{
		chart.TimeSeries{
			XValues: []time.Time{
				time.Now().AddDate(0, 0, -10),
				time.Now().AddDate(0, 0, -9),
				time.Now().AddDate(0, 0, -8),
				time.Now().AddDate(0, 0, -7),
				time.Now().AddDate(0, 0, -6),
				time.Now().AddDate(0, 0, -5),
				time.Now().AddDate(0, 0, -4),
				time.Now().AddDate(0, 0, -3),
				time.Now().AddDate(0, 0, -2),
				time.Now().AddDate(0, 0, -1),
				time.Now(),
			},
			YValues: []float64{1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0},
		},
	},
}

My sample code is based off of this example in master
https://github.com/wcharczuk/go-chart/blob/master/examples/timeseries/main.go

[StephanVerbeeck]

Same problem here, anybody worked on this? (or find a work around)