Observation - effective [x] - Type Timing or instant

For effective [x], what are the real world use cases where that would use Timing or instant Type would be used.

Any guidance is much appreciated

dateTime or period are appropriate for over 90% of your use cases. instant overlaps with dateTime and is only there for convenience. Timing is for more complex scenarios where a observation may reported using fuzzy times relative to a life event perhaps, like “after breakfast” or “before bedtime”. For example a patient may be self reporting something like an episode or food or a heart rate. Timing can also be use to report disjointed periods like 8-9AM and 1-2PM or a sequence of times. For example recording a clinical sign or symptom.

This is exactly what I was looking for. Thank you so much for the guidance!