There was a 60 minutes episode interviewing 6 SAMs[1]. They're tested with random historical events happening back a few decades, some fairly mundane such as

There was a 60 minutes episode interviewing 6 SAMs[1]. They're tested with random historical events happening back a few decades, some fairly mundane such as weather patterns - --- "Let's move back in time now to 1990. It rained on several days in January and February, can you name the dates on which it rained?" McGaugh asked. Believe it or not, she could. "Let's see. It was slightly rainy and cloudy on January 14th, 15th. It was very hot the weekend of the 27th, 28th, no rain," she replied. We checked the official weather records and she was right. --- 1. https://www.cbsnews.com/news/the-gift-of-endless-memory/ https://www.cbsnews.com/news/the-gift-of-endless-memory/