The cycle histogram is an important, but underused record type available with all PMI recorders. The histogram doesn’t require any configuration, spans the entire recording session (no possibility of memory overflow), has cycle-level resolution, and is always enabled. Histograms are traditionally used for statistical analyses, and since all time information has been removed, it is not usually thought of when event duration or analysis is required. This paper shows a way to use the histogram for cycle-level event duration calculation without using waveform capture or other more advanced record types.