Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/24/2019   10:24:35   (   0.00,-137.21) (  -0.43,-135.32)  215.83                80
 05/25/2019   22:46:31   (  -0.01,-137.19) (  -0.80,-140.61)  391.01                80
 05/26/2019   22:30:28   (  -0.01,-137.19) (   0.25,-136.09)  125.32                80
 05/28/2019   10:52:16   (   0.01,-137.20) (   0.94,-141.36)  473.50                80
 05/29/2019   10:30:52   (   0.02,-137.20) (  -0.05,-136.82)   42.13                80
 05/31/2019   22:34:05   (  -0.01,-137.15) (  -0.11,-137.60)   51.10                80
 06/01/2019   22:18:00   (  -0.01,-137.14) (   0.88,-133.07)  464.08                80
 06/03/2019   10:39:49   (   0.00,-137.15) (   0.26,-138.35)  136.45                80
 06/04/2019   10:18:25   (   0.00,-137.13) (  -0.74,-133.82)  377.88                80
 06/05/2019   22:40:21   (   0.00,-137.07) (  -0.47,-139.11)  232.99                80