Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 8 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/22/2019   10:40:10   (  -0.04,-137.21) (   0.21,-138.36)  131.20                80
 08/23/2019   10:18:46   (  -0.04,-137.21) (  -0.81,-133.83)  385.42                80
 08/24/2019   22:40:42   (   0.04,-137.21) (  -0.40,-139.13)  219.58                80
 08/25/2019   22:24:37   (   0.05,-137.20) (   0.62,-134.60)  296.47                80
 08/27/2019   10:46:26   (  -0.05,-137.20) (   0.52,-139.88)  304.60                80
 08/28/2019   10:25:01   (  -0.05,-137.19) (  -0.50,-135.35)  210.97                80
 08/29/2019   22:46:58   (   0.06,-137.17) (  -0.70,-140.65)  395.45                80
 08/30/2019   22:30:53   (   0.06,-137.16) (   0.32,-136.12)  119.99                80
 09/01/2019   10:52:40   (  -0.06,-137.15) (   0.89,-141.38)  481.78                80
 09/02/2019   10:31:16   (  -0.06,-137.14) (  -0.13,-136.85)   33.36                80