What phenomenon of May 29, 1919 was the longest in time and confirmed the general theory of relativity?

How could it be "the longest in time" if the one in 1937 was longer? I guess they could clarify "up to that point in time"?

Player: Coco, it says "and confirmed the general theory of relativity" so that only happened in 1919.

Player: Coco, I think he was speaking from the first time

Player en_846, I don't think the phrase "longest in time" was needed, at least not in the question.

Player: Coco, they are in chronological order just worded poorly

Player: Coco, The first recorded event would have been the longest and shortest in time. Why not focus on the longest one until now?