Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 9 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)
 09/10/2019   22:24:38   (   0.02,-137.19) (   0.62,-134.58)  297.29                80
 09/12/2019   10:46:25   (  -0.02,-137.19) (   0.58,-139.84)  302.94                80
 09/13/2019   10:25:00   (  -0.02,-137.18) (  -0.44,-135.31)  212.84                80
 09/14/2019   22:46:57   (   0.02,-137.16) (  -0.74,-140.61)  393.76                80
 09/15/2019   22:30:52   (   0.02,-137.15) (   0.28,-136.09)  121.81                80
 09/17/2019   10:50:00   (  -0.02,-137.14) (   0.92,-141.35)  479.35                80
 09/18/2019   10:33:55   (  -0.02,-137.13) (  -0.10,-136.82)   35.67                80
 09/20/2019   22:34:26   (   0.02,-137.07) (  -0.11,-137.58)   57.97                80
 09/21/2019   22:18:21   (   0.02,-137.05) (   0.92,-133.05)  456.29                80
 09/23/2019   10:40:09   (  -0.02,-137.03) (   0.29,-138.31)  146.91                80