Hey David, are you still having problems? We were busy with the Cesium 1.0 release so a lot of questions went unanswered recently. The reason this doesn’t work is because you are defining a point that only exists at a single instant in time, rather than provide a point that is visible over an interval.
There are two ways to do what you want.
- Provide a static position over an interval instead of an instant:
“cartographicDegrees”: [-12,33, 0]
- Provide a single instant in time (like you are doing now) but use the forwardExtrapolationType option to keep that point around forever.
“cartographicDegrees”: [0, -12, 33, 0]
I didn’t actually test those snippets, but they should be correct (or pretty close).