Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 12 6.  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)
 12/06/2021   18:53:15   (  -0.04,-137.19) (   0.62,-140.17)  339.97                80
 12/07/2021   18:29:56   (  -0.04,-137.18) (  -0.51,-135.18)  228.49                80
 12/09/2021   06:51:35   (   0.03,-137.17) (  -0.54,-139.77)  296.46                80
 12/10/2021   06:28:16   (   0.03,-137.16) (   0.58,-134.78)  271.89                80
 12/11/2021   18:49:47   (  -0.03,-137.15) (   0.45,-139.34)  248.86                80
 12/12/2021   18:26:27   (  -0.03,-137.14) (  -0.67,-134.34)  319.42                80
 12/14/2021   06:48:07   (   0.02,-137.12) (  -0.37,-138.93)  205.97                80
 12/15/2021   06:24:47   (   0.02,-137.11) (   0.75,-133.94)  361.94                80
 12/16/2021   18:43:39   (  -0.02,-137.09) (   0.27,-138.50)  159.80                80
 12/17/2021   18:25:38   (  -0.02,-137.08) (  -0.80,-133.49)  407.76                80
 12/19/2021   06:41:57   (   0.01,-137.05) (  -0.25,-138.08)  118.93                80