A one-dimensional transport-kinetics model is used to examine the variations in stratospheric minor species concentrations expected to occur during an eclipse of the sun. The short chemical lifetime of some of the important stratospheric species suggest that significant variations in concentration of some species are expected. Species which show large diurnal behavior, such as NO and OH, should be expected to have especially noticeable changes during the eclipse. Such variations during an eclipse, if measured, could provide a validation for the short response time chemistry in several catalytic cycles currently used in models of stratospheric chemistry.