Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 8 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/09/2019   22:24:36   (   0.04,-137.20) (   0.64,-134.62)  294.75                80
 08/11/2019   10:46:24   (  -0.04,-137.20) (   0.56,-139.88)  305.54                80
 08/12/2019   10:24:59   (  -0.04,-137.19) (  -0.45,-135.35)  210.07                80
 08/13/2019   22:46:55   (   0.05,-137.17) (  -0.76,-140.64)  397.04                80
 08/14/2019   22:30:51   (   0.05,-137.16) (   0.26,-136.11)  118.49                80
 08/16/2019   10:52:39   (  -0.05,-137.16) (   0.89,-141.39)  482.37                80
 08/17/2019   10:33:55   (  -0.05,-137.14) (  -0.13,-136.86)   32.88                80
 08/19/2019   22:34:27   (   0.06,-137.10) (  -0.06,-137.63)   59.92                80
 08/20/2019   22:18:22   (   0.06,-137.09) (   0.96,-133.10)  454.92                80
 08/22/2019   10:37:29   (  -0.06,-137.07) (   0.25,-138.36)  147.14                80
 08/23/2019   10:21:25   (  -0.06,-137.05) (  -0.77,-133.83)  367.10                80