Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 10 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)
 10/22/2021   06:44:45   (   0.05,-137.20) (  -0.16,-138.09)  101.73                80
 10/23/2021   06:21:26   (   0.05,-137.21) (   0.94,-133.10)  467.90                80
 10/24/2021   18:40:18   (  -0.04,-137.22) (   0.06,-137.66)   51.05                80
 10/27/2021   06:41:19   (   0.04,-137.21) (   0.00,-137.26)    6.70                80
 10/29/2021   18:39:32   (  -0.03,-137.20) (  -0.10,-136.83)   42.39                80
 10/31/2021   06:58:32   (   0.03,-137.19) (  -0.93,-141.42)  482.52                80
 11/01/2021   06:35:12   (   0.03,-137.18) (   0.17,-136.43)   85.73                80
 11/02/2021   18:54:05   (  -0.02,-137.17) (   0.83,-140.99)  435.57                80
 11/03/2021   18:36:05   (  -0.02,-137.16) (  -0.27,-136.00)  132.28                80