Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 7 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/11/2019   10:24:52   (  -0.02,-137.20) (  -0.41,-135.34)  211.41                80
 07/12/2019   22:46:50   (   0.02,-137.19) (  -0.75,-140.65)  395.08                80
 07/13/2019   22:30:45   (   0.02,-137.19) (   0.26,-136.12)  121.33                80
 07/15/2019   10:52:33   (  -0.03,-137.21) (   0.90,-141.39)  477.35                80
 07/16/2019   10:33:49   (  -0.03,-137.20) (  -0.10,-136.86)   38.66                80
 07/18/2019   22:34:21   (   0.03,-137.17) (  -0.10,-137.63)   53.13                80
 07/19/2019   22:18:16   (   0.02,-137.16) (   0.90,-133.10)  462.82                80
 07/21/2019   10:37:25   (  -0.03,-137.17) (   0.26,-138.37)  136.71                80
 07/22/2019   10:21:20   (  -0.02,-137.17) (  -0.75,-133.84)  378.83                80
 07/23/2019   22:40:38   (   0.03,-137.13) (  -0.40,-139.15)  229.85                80