Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 11 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/12/2021   22:35:38   (  -0.01,-137.19) (  -0.18,-137.79)   69.07                80
 11/13/2021   22:19:36   (  -0.01,-137.19) (   0.89,-133.28)  446.74                80
 11/15/2021   10:38:45   (   0.01,-137.19) (   0.32,-138.54)  154.32                80
 11/16/2021   10:22:41   (   0.01,-137.19) (  -0.68,-134.01)  361.23                80
 11/17/2021   22:42:00   (  -0.01,-137.17) (  -0.49,-139.32)  245.56                80
 11/18/2021   22:25:56   (  -0.01,-137.16) (   0.52,-134.79)  269.58                80
 11/20/2021   10:45:06   (   0.01,-137.15) (   0.69,-140.06)  332.64                80
 11/21/2021   10:29:03   (   0.01,-137.13) (  -0.38,-135.54)  181.99                80
 11/22/2021   22:48:20   (  -0.01,-137.10) (  -0.86,-140.84)  426.32                80
 11/23/2021   22:32:17   (  -0.00,-137.09) (   0.16,-136.31)   87.80                80