For this case, I would recommend using the expand event of the Kendo UI TimeLine. In the function handler, get the current node and use its date as necessary. Here is an example:
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.