What day of the week was March 5, 1979?

The day of the week March 5th, 1979 fell on was a Monday.

Soviet probes Venera 11 the Venera 12 and the American solar satellite Helios II all are hit by "off the scale" gamma rays leading to the discovery of soft gamma repeaters. America's Voyager 1 spacecraft has its closest approach to Jupiter the 172,000 miles.