Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 1 9.  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)
 01/10/2021   06:40:55   (   0.01,-137.25) (  -0.01,-137.31)    7.72                80
 01/12/2021   18:36:28   (  -0.02,-137.30) (  -0.11,-136.89)   46.97                80
 01/14/2021   06:58:10   (   0.02,-137.30) (  -0.94,-141.48)  476.62                80
 01/15/2021   06:37:31   (   0.02,-137.32) (   0.20,-136.49)   93.87                80
 01/16/2021   18:53:44   (   0.00,-137.35) (   0.81,-141.06)  421.76                80
 01/17/2021   18:35:44   (   0.02,-137.37) (  -0.27,-136.06)  148.87                80
 01/19/2021   06:54:45   (  -0.02,-137.37) (  -0.78,-140.65)  375.10                80
 01/20/2021   06:31:27   (  -0.02,-137.38) (   0.35,-135.67)  194.86                80
 01/21/2021   18:50:19   (  -0.00,-137.40) (   0.65,-140.23)  322.51                80
 01/22/2021   18:32:21   (  -0.01,-137.41) (  -0.49,-135.24)  246.89                80