It has been shown repeatedly that longer visual than auditory durations are judged equivalent to temporal concepts such as a clock second. The present experiment explored this intersensory difference in time judgment through cross-modal and intramodal successive comparisons of auditory and visual inputs. Auditory durations were judged longer than visual, and visual durations were judged shorter than auditory for 3 different interstimulus intervals. The intersensory phenomenon previously obtained with the absolute method was also found by direct comparison suggesting a fundamental cross-modal difference characteristic of human time judgment.