When did the Canadian liner "Duchess of Richmond" arrive in Halifax with the "most important cargo ever to reach the shores of the New World" ?

The epoch-shaping voyage of the SS Duchess of Richmond definitely ended in Halifax Nova Scotia sometime in the first week of September 1940, but I have seen the date given confidently as either the 5th, 6th and 7th of that month.

(The date as being the 6th is from the Official Chronology of the US Navy and it gives a convincing amount of detail to support this claim.)

Among them, that Winston Churchill himself remarked on the strange coincidence that the first US destroyers and the Duchess of Richmond carrying the British sailors destined to man them arrived the same day in Halifax.

One of those first vessels, the USS Buchanan - HMS Campbeltown , later became famous for successfully ramming and blowing up the drydock at St Nazaire.

The cavity magnetron that made microwave radar work was not the only interesting cargo the Duchess of Richmond transported to Halifax during the WWII period.

Halifax, September 7th 2015 : 75th anniversary of the arrival of "the most important cargo ever to land in the New World"

When the British liner The Duchess of Richmond docked in Halifax on September 7th 1940, few informed observers had any doubt what that all important cargo was.

Clearly it was the liner's one thousand Royal Navy sailors all set to man the 50 "destroyers for bases" ships that were busy arriving in Halifax that day to be de-commissioned by the US , handed over, and then promptly re-commissioned by the UK and Canada.

Of course, they were wrong --- the tale is far more interesting than that and little known even in Halifax, where it all began.