Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 10 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/14/2020   22:24:19   (  -0.03,-137.21) (   0.57,-134.55)  303.56                80
 10/16/2020   10:43:26   (   0.03,-137.21) (   0.60,-139.82)  296.83                80
 10/17/2020   10:27:20   (   0.03,-137.21) (  -0.39,-135.28)  219.60                80
 10/18/2020   22:46:36   (  -0.03,-137.20) (  -0.81,-140.58)  385.63                80
 10/19/2020   22:30:31   (  -0.03,-137.20) (   0.24,-136.06)  130.31                80
 10/21/2020   10:49:38   (   0.03,-137.19) (   0.93,-141.33)  471.53                80
 10/22/2020   10:33:33   (   0.03,-137.18) (  -0.06,-136.80)   43.89                80
 10/24/2020   22:34:04   (  -0.02,-137.15) (  -0.09,-137.57)   47.44                80
 10/25/2020   22:17:58   (  -0.02,-137.14) (   0.91,-133.04)  467.88                80
 10/27/2020   10:37:06   (   0.01,-137.13) (   0.27,-138.31)  134.58                80