Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 8 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/16/2019   10:52:39   (  -0.04,-137.20) (   0.91,-141.38)  477.55                80
 08/17/2019   10:31:14   (  -0.04,-137.19) (  -0.10,-136.85)   38.35                80
 08/19/2019   22:34:27   (   0.05,-137.17) (  -0.03,-137.63)   52.44                80
 08/20/2019   22:18:22   (   0.05,-137.16) (   0.93,-133.09)  463.12                80
 08/22/2019   10:40:10   (  -0.05,-137.15) (   0.22,-138.36)  138.46                80
 08/23/2019   10:18:45   (  -0.05,-137.13) (  -0.80,-133.83)  376.38                80
 08/24/2019   22:40:42   (   0.06,-137.10) (  -0.40,-139.13)  231.82                80
 08/25/2019   22:24:37   (   0.06,-137.08) (   0.62,-134.60)  282.47                80
 08/27/2019   10:46:25   (  -0.06,-137.05) (   0.59,-139.86)  320.83                80
 08/28/2019   10:27:08   (  -0.07,-137.03) (  -0.43,-135.33)  192.94                48