  We explore the crucial role of relative space-time positioning between the
two detectors in an operational two-party entanglement-harvesting protocol.
Specifically we show that the protocol is robust if imprecision in spatial
positioning and clock synchronization are much smaller than the spatial
separation between the detectors and its light-crossing time thereof. This in
principle guarantees robustness if the imprecision is comparable to a few times
the size of the detectors, which suggests entanglement harvesting could be
explored for tabletop experiments. On the other hand, keeping the effects of
this imprecision under control would be demanding on astronomical scales.
