How long is the flight time from yul to Sankt-Peterburg?

What is the approximate flight time between the places Montréal-Pierre Elliott Trudeau International Airport or Montréal-Trudeau, formerly known as Montréal-Dorval International Airport, located on the Island of Montreal, from Montreal's downtown core and Saint Petersburg, the city and a federal subject (a federal city) of Russia located on the Neva River at the head of the Gulf of Finland on the Baltic Sea?

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Show reasoning Reasoning

I followed this chain of reasoning:

I know from locally stored knowledge that:
45°28'14"N is the latitude of Montréal-Pierre Elliott Trudeau International Airport ([fact: ["243053770@trueknowledge.com"]])

59°56'00"N is the latitude of Sankt-Peterburg ([fact: ["648319092@trueknowledge.com"]])

73°44'27"W is the longitude of Montréal-Pierre Elliott Trudeau International Airport ([fact: ["646176388@trueknowledge.com"]])

30°20'00"E is the longitude of Sankt-Peterburg ([fact: ["648319096@trueknowledge.com"]])

By calculation (generator: ["distance_between3@trueknowledge.com"]) I know that:
6,433.62790286 kilometres is the distance between Montréal-Pierre Elliott Trudeau International Airport and Sankt-Peterburg

By calculation (generator: ["flight_time_between_two_places@trueknowledge.com"]) I know that:
8 hours and 30 minutes is the flight time between Montréal-Pierre Elliott Trudeau International Airport and Sankt-Peterburg

I used the following facts to provide this answer:

45°28'14"N is the latitude of Montréal-Pierre Elliott Trudeau International Airport

agree disagree edit

59°55'60"N is the latitude of Sankt-Peterburg

agree disagree edit

73°44'27"W is the longitude of Montréal-Pierre Elliott Trudeau International Airport

agree disagree edit

30°19'60"E is the longitude of Sankt-Peterburg

agree disagree edit