Show time on x axis of the chart using Charts library by Daniel Gindi

I am using Charts library by Daniel Gindi: https://github.com/danielgindi/Charts

For my project, I need to replace the x axis with time that shows only hours and minutes (HH:mm).

I've created the class with an extension based on this answer: ios Charts 3.0 - Align x labels (dates) with plots

import UIKit
import Charts

class ChartXAxisFormatter: NSObject {
      fileprivate var dateFormatter: DateFormatter?
      fileprivate var referenceTimeInterval: TimeInterval?

      convenience init(referenceTimeInterval: TimeInterval, dateFormatter: DateFormatter) {
          self.init()
          self.referenceTimeInterval = referenceTimeInterval
          self.dateFormatter = dateFormatter
      }
}

extension ChartXAxisFormatter: IAxisValueFormatter {

     func stringForValue(_ value: Double, axis: AxisBase?) -> String {
           guard let dateFormatter = dateFormatter,
           let referenceTimeInterval = referenceTimeInterval
           else {
               return ""
           }

           let date = Date(timeIntervalSince1970: value * 3600 * 24 + referenceTimeInterval)
           return dateFormatter.string(from: date)
       }

}

I have one Charts view that shows a pressure or temperature chart when I click on the particular button (there are separate buttons for showing temperature/pressure).

So, my question is that I can't figure out how I can actually use this class to transform my x axis to show time?

Any ideas? Thank you!

Copyright Notice：Content Author:「Lilya」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/60655640/show-time-on-x-axis-of-the-chart-using-charts-library-by-daniel-gindi