Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/16/2019   22:17:54   (  -0.00,-137.18) (   0.95,-133.06)  470.66                80
 05/18/2019   10:39:42   (   0.00,-137.20) (   0.25,-138.33)  128.43                80
 05/19/2019   10:18:17   (   0.00,-137.19) (  -0.74,-133.79)  386.78                80
 05/20/2019   22:40:15   (  -0.00,-137.15) (  -0.43,-139.10)  222.45                80
 05/21/2019   22:24:10   (   0.00,-137.14) (   0.56,-134.57)  292.71                80
 05/23/2019   10:45:59   (  -0.00,-137.15) (   0.57,-139.85)  306.95                80
 05/24/2019   10:24:35   (  -0.01,-137.14) (  -0.42,-135.32)  207.56                80
 05/25/2019   22:46:31   (   0.01,-137.08) (  -0.81,-140.61)  403.16                80
 05/26/2019   22:30:28   (   0.01,-137.07) (   0.25,-136.09)  111.52                80
 05/28/2019   10:52:16   (  -0.02,-137.08) (   0.95,-141.36)  488.25                80
 05/29/2019   10:30:52   (  -0.02,-137.06) (  -0.04,-136.82)   25.96                80