That depends entirely on where in the Pacific to where in the Atlantic.
Tje aanswer I came up with is 1year
the Pacific or the Atlantic
Alexander Mackenzie was the first.
Tasman sailed in the Atlantic, the Indian and the Pacific Oceans
The Pacific Ocean & the Atlantic Ocean.
about thirty days.
Through the Panama Canal.
The train is scheduled to arrive in the year 2035.
Magellan's expedition of 1519-1522 became the first expedition to sail from the Atlantic Ocean into the Pacific Ocean the passage being made via the Strait of Magellan, and the first to cross the Pacific from Wikipedia
Pacific ocean and Atlantic ocean
The Atlantic Ocean
Atlantic Ocean