Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 1 13.  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)
 01/14/2021   06:58:10   (  -0.01,-137.22) (  -0.95,-141.48)  485.43                80
 01/15/2021   06:34:50   (  -0.01,-137.22) (   0.13,-136.48)   83.55                80
 01/16/2021   18:56:22   (   0.01,-137.23) (   0.87,-141.04)  435.25                80
 01/17/2021   18:33:04   (   0.01,-137.23) (  -0.26,-136.06)  133.58                80
 01/19/2021   06:54:45   (  -0.01,-137.22) (  -0.79,-140.65)  391.86                80
 01/20/2021   06:31:27   (  -0.01,-137.21) (   0.35,-135.66)  176.75                80
 01/21/2021   18:52:58   (   0.01,-137.22) (   0.71,-140.22)  342.74                80
 01/22/2021   18:29:40   (   0.01,-137.21) (  -0.43,-135.23)  225.45                80
 01/24/2021   06:51:21   (  -0.02,-137.19) (  -0.62,-139.83)  301.21                80
 01/25/2021   06:28:02   (  -0.02,-137.17) (   0.52,-134.84)  266.45                80
 01/26/2021   18:49:34   (   0.02,-137.16) (   0.54,-139.39)  254.57                80