Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 8 11.  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)
 08/11/2021   06:34:22   (   0.02,-137.20) (   0.35,-135.62)  179.35                80
 08/12/2021   18:50:34   (  -0.02,-137.20) (   0.65,-140.18)  340.14                80
 08/13/2021   18:32:35   (  -0.02,-137.19) (  -0.45,-135.18)  228.66                80
 08/15/2021   06:48:55   (   0.02,-137.18) (  -0.58,-139.78)  296.79                80
 08/16/2021   06:30:56   (   0.02,-137.17) (   0.57,-134.79)  271.42                80
 08/17/2021   18:47:08   (  -0.02,-137.15) (   0.49,-139.34)  249.65                80
 08/18/2021   18:29:08   (  -0.02,-137.14) (  -0.62,-134.34)  317.94                80
 08/20/2021   06:48:09   (   0.02,-137.11) (  -0.42,-138.94)  208.92                80
 08/21/2021   06:24:50   (   0.01,-137.09) (   0.74,-133.95)  358.62                80
 08/22/2021   18:43:41   (  -0.01,-137.07) (   0.31,-138.50)  162.99                80
 08/23/2021   18:25:42   (  -0.01,-137.06) (  -0.79,-133.51)  404.37                80