Conversation so far:
When did Ferdinand Magellan depart and cross the Atlantic?
Ferdinand Magellan's fleet left Spain on 20 September 1519, sailing west across the Atlantic toward South America.
Did Ferdinand Magellan's fleet have problems before leaving Spain in 1519?
After having his proposed expeditions to the Spice Islands repeatedly rejected by King Manuel of Portugal, Ferdinand Magellan turned to Charles I, the young King of Spain.
Why did Ferdinand Magellan's fleet need to be resupplied?
The long journey exhausted their supply of food and water, and around 30 men died, mostly of scurvy. Ferdinand Magellan himself remained healthy, because of his personal supply of preserved quince.
What was Ferdinand Magellan's voyage crossing of the Atlantic like?
From Rio de Janeiro, Ferdinand Magellan searched for a way through or around the continent. After three months of searching, weather conditions forced the fleet to stop for winter.

Question: how long did the crossing take?
Self-contained rewrite: How long did Ferdinand Magellan's crossing of the Atlantic take?