Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 9 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/04/2019   22:34:28   (   0.02,-137.19) (  -0.04,-137.61)   47.04                80
 09/05/2019   22:18:22   (   0.02,-137.19) (   0.92,-133.07)  468.99                80
 09/07/2019   10:40:10   (  -0.02,-137.19) (   0.22,-138.34)  131.80                80
 09/08/2019   10:18:46   (  -0.03,-137.18) (  -0.80,-133.81)  383.77                80
 09/09/2019   22:40:42   (   0.03,-137.16) (  -0.39,-139.12)  222.78                80
 09/10/2019   22:24:37   (   0.03,-137.15) (   0.57,-134.57)  292.64                80
 09/12/2019   10:46:25   (  -0.03,-137.14) (   0.57,-139.85)  308.85                80
 09/13/2019   10:25:01   (  -0.03,-137.12) (  -0.45,-135.32)  206.35                80
 09/14/2019   22:46:56   (   0.03,-137.10) (  -0.79,-140.61)  400.83                80
 09/15/2019   22:30:51   (   0.02,-137.08) (   0.24,-136.08)  114.11                80
 09/17/2019   10:50:00   (  -0.03,-137.06) (   0.91,-141.35)  488.28                80