Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 9 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 09/25/2021   06:02:55   (   0.33,-127.76) (   0.34,-127.72)    5.15                80
 09/27/2021   18:01:06   (  -0.33,-127.63) (  -0.39,-127.27)   40.70                80
 09/29/2021   06:17:27   (   0.34,-127.61) (  -0.60,-131.87)  485.97                80
 09/30/2021   05:59:27   (   0.33,-127.56) (   0.46,-126.87)   79.08                80
 10/01/2021   18:15:38   (  -0.34,-127.46) (   0.55,-131.43)  452.09                80
 10/02/2021   17:57:39   (  -0.33,-127.42) (  -0.57,-126.43)  112.71                80
 10/04/2021   06:13:59   (   0.35,-127.39) (  -0.47,-131.02)  414.55                80
 10/05/2021   05:56:00   (   0.34,-127.34) (   0.65,-126.03)  149.94                80
 10/06/2021   18:12:10   (  -0.35,-127.23) (   0.42,-130.57)  381.97                80