At ArcGIS JavaScript API version 4.16, we added a new property called tickConfigs on the TimeSlider widget. This property opens up endless possibilities for you to customize the default ticks and labeling system for the TimeSlider widget. This was a commonly requested enhancement. Please check out the video below to understand and how to take advantage of this property for your time slider. You can find the source code and live sample used in the video from here.
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