Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 9 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 09/21/2021   18:25:43   (  -0.04,-137.21) (  -0.87,-133.50)  422.76                80
 09/23/2021   06:44:43   (   0.04,-137.20) (  -0.18,-138.09)  101.40                80
 09/24/2021   06:22:37   (   0.03,-137.20) (   0.94,-133.09)  467.61                 7
 09/25/2021   18:40:15   (  -0.03,-137.20) (   0.07,-137.65)   52.14                80
 09/28/2021   06:38:36   (   0.03,-137.17) (  -0.00,-137.25)    9.19                80
 09/30/2021   18:39:28   (  -0.02,-137.15) (  -0.10,-136.81)   37.86                80
 10/02/2021   06:58:28   (   0.02,-137.12) (  -0.94,-141.41)  488.32                80
 10/03/2021   06:35:09   (   0.02,-137.10) (   0.18,-136.41)   79.17                80
 10/04/2021   18:54:00   (  -0.01,-137.08) (   0.83,-140.97)  442.96                80