What term refers to an instantaneous moment in time, such as data reception in GPS?

The term "epoch" refers to a specific point in time or a moment when a certain event occurs, particularly in the context of data collection in geospatial fields like GPS. In GPS technology, an epoch is crucial for capturing the precise location information at a specific instance, allowing surveyors and engineers to analyze and represent data accurately. This is because GPS signals are often recorded at designated epochs to ensure synchronization and consistency in measurements across time.

In contrast, while a "timestamp" relates to the recording of the time at which data is captured, it doesn't inherently convey the notion of a singular event or moment as effectively as "epoch" does in geospatial contexts. The word "chronicle" implies a narrative of events over time rather than a specific moment, and "interval" suggests a duration between two points in time rather than an individual point itself. Thus, "epoch" is the most appropriate term to describe that instantaneous moment in time relevant to GPS data reception.