Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 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)
 07/10/2019   10:46:17   (  -0.02,-137.19) (   0.60,-139.88)  306.57                80
 07/11/2019   10:24:52   (  -0.02,-137.18) (  -0.41,-135.34)  208.86                80
 07/12/2019   22:46:50   (   0.02,-137.14) (  -0.75,-140.65)  399.87                80
 07/13/2019   22:30:45   (   0.02,-137.13) (   0.26,-136.12)  115.29                80
 07/15/2019   10:49:53   (  -0.03,-137.13) (   0.90,-141.39)  485.05                80
 07/16/2019   10:33:49   (  -0.02,-137.12) (  -0.10,-136.86)   29.79                80
 07/18/2019   22:34:21   (   0.03,-137.05) (  -0.10,-137.63)   65.53                80
 07/19/2019   22:18:16   (   0.02,-137.04) (   0.91,-133.10)  449.05                80
 07/21/2019   10:37:25   (  -0.03,-137.03) (   0.25,-138.37)  152.09                80
 07/22/2019   10:21:20   (  -0.02,-137.01) (  -0.76,-133.84)  362.19                80