Smart Gantt is live on the Obsidian community plugin store.
[due:: ] fields.Open the Smart Gantt view from the right sidebar and every dated task in your vault shows up on one timeline.

Drop a gantt code block anywhere in a note to embed a chart scoped to that document:
```gantt
```

Right click (hold on mobile) the chart to open the settings view. Settings are stored as JSON inside the code block, so you can also edit them by hand.
Smart Gantt tracks lines with a checkbox that contain something interpretable as a time or time range. Its natural language parsing is good, not psychic:
Sat Aug 17 2024 9 AM works; 9 AM Aug 17 2024 parses as two separate points in time.