This paper investigates the occurrence of the cosmic ray intensity minimum during solar cycle 21 at widely separated locations in the heliosphere. The data incude in situ measurements by cosmic ray detectors on the earth-orbiting satellite IMP 8 (E>35 MeV), on the Voyagers 1 and 2 spacecraft (E>70 MeV), and on the Pioneers 10 and 11 spacecraft (E>80 MeV), located at distances from 1 to 27 AU. Note that Pioneer 10 and the other three spacecraft (Pioneer 11 and Voyagers 1 and 2) are on the opposite sides of the sun, with the latter moving toward the tail of the heliosphere. The data used in this study have been suitably corrected for removing solar flare particle contributions. Forbush decreases, and contamination by the radiosotope thermoelectric generator. It is evident that there exists a time delay in the occurrence of the cosmic ray intensity minimum registered by the IMP 8 and Pioneer 10 detectors, the latter being located at ~27 AU. We show that the data from the four spacecraft in deep space are on an average consistent with the IMP 8 data at 1 AU when suitably corrected, using 3%/AU for the radial gradient and 500 km/s for the average speed of propagation. An overview f the intensity profiles reveals reasonable agreement among them. However, specific intensity features appear at times to propagate with speeds in excess of the average value of ~500 km/s.