This application transforms Timeline JS timelines into a format that makes browsing the timeline easier, at the cost of some of the excellent aesthetics of Timeline JS.
You can enter the URL for a Google Sheet that defines a single timeline, or a Google Sheet that contains a list of other Google Sheets in the first column, which will aggregate the contents of all of those sheets.
For any setup, the spreadsheets must be set to "Anyone with the link can view" for this system to be able to access them.
How would you like to set up your timeline?