Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 1 1.  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)
 01/01/2021   06:24:23   (   0.02,-137.21) (   0.73,-133.96)  370.38                80
 01/02/2021   18:45:55   (  -0.01,-137.22) (   0.29,-138.52)  148.98                80
 01/03/2021   18:22:37   (  -0.01,-137.21) (  -0.84,-133.53)  419.38                80
 01/05/2021   06:44:18   (   0.00,-137.19) (  -0.21,-138.13)  107.02                80
 01/06/2021   06:21:00   (   0.01,-137.18) (   0.92,-133.14)  460.79                80
 01/07/2021   18:39:52   (  -0.01,-137.18) (   0.09,-137.70)   59.87                80
 01/10/2021   06:40:55   (   0.02,-137.13) (   0.00,-137.31)   20.70                80
 01/12/2021   18:39:08   (  -0.01,-137.09) (  -0.07,-136.88)   24.66                80