19 years and 364 days ago was about 1.000137 best time (considering 20 years ago was best time 1 and now is best time 2). I know it's not preciser enough, but

19 years and 364 days ago was about 1.000137 best time (considering 20 years ago was best time 1 and now is best time 2). I know it's not preciser enough, but more pedantic answer requires more precise definition of "now" and "20 years ago".