Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 4 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)
 04/17/2019   10:17:58   (   0.00,-137.20) (  -0.75,-133.73)  395.53                80
 04/18/2019   22:39:56   (  -0.00,-137.18) (  -0.39,-139.05)  211.68                80
 04/19/2019   22:23:52   (  -0.00,-137.18) (   0.59,-134.51)  304.25                80
 04/21/2019   10:45:40   (   0.00,-137.19) (   0.61,-139.78)  295.45                80
 04/22/2019   10:24:17   (   0.00,-137.18) (  -0.43,-135.26)  219.58                80
 04/23/2019   22:46:14   (  -0.00,-137.14) (  -0.77,-140.56)  389.53                80
 04/24/2019   22:30:10   (   0.00,-137.14) (   0.28,-136.04)  125.62                80
 04/26/2019   10:51:59   (  -0.00,-137.14) (   0.93,-141.31)  474.34                80
 04/27/2019   10:30:34   (  -0.00,-137.13) (  -0.05,-136.77)   40.14                80
 04/29/2019   22:33:48   (  -0.00,-137.06) (  -0.09,-137.56)   55.94                80