Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/29/2019   10:30:52   (  -0.01,-137.19) (  -0.09,-136.83)   40.82                80
 05/31/2019   22:34:05   (   0.01,-137.15) (  -0.08,-137.61)   52.10                80
 06/01/2019   22:18:01   (   0.02,-137.14) (   0.92,-133.08)  462.97                80
 06/03/2019   10:39:49   (  -0.02,-137.14) (   0.28,-138.34)  138.01                80
 06/04/2019   10:18:26   (  -0.02,-137.12) (  -0.78,-133.82)  376.22                80
 06/05/2019   22:40:22   (   0.02,-137.07) (  -0.44,-139.12)  234.29                80
 06/06/2019   22:24:17   (   0.02,-137.04) (   0.56,-134.59)  279.77                80
 06/08/2019   10:46:06   (  -0.02,-137.03) (   0.64,-139.85)  322.18                80
 06/09/2019   10:24:42   (  -0.02,-137.01) (  -0.42,-135.33)  191.39                80
 06/10/2019   22:46:39   (   0.02,-136.94) (  -0.80,-140.63)  420.58                80