In the spring of 1521 the ships crossed the now called the International Date Line.?

In the spring of 1521, Ferdinand Magellan's fleet crossed what is now known as the International Date Line during their historic circumnavigation of the globe. This crossing marked a significant moment in navigation history, as it helped establish a reference point for timekeeping and calendars. The fleet's journey highlighted the challenges of long-distance maritime exploration and the complexities of time zones as they navigated into new territories. Ultimately, this voyage contributed to a greater understanding of the world's geography.