Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/21/2019   22:24:11   (  -0.00,-137.18) (   0.59,-134.57)  297.77                80
 05/23/2019   10:45:59   (  -0.00,-137.20) (   0.61,-139.84)  301.54                80
 05/24/2019   10:24:35   (  -0.01,-137.19) (  -0.45,-135.32)  213.81                80
 05/25/2019   22:46:32   (   0.01,-137.16) (  -0.78,-140.62)  394.68                80
 05/26/2019   22:30:28   (   0.01,-137.15) (   0.28,-136.10)  120.87                80
 05/28/2019   10:52:17   (  -0.01,-137.16) (   0.92,-141.36)  478.52                80
 05/29/2019   10:30:52   (  -0.01,-137.15) (  -0.07,-136.83)   36.36                80
 05/31/2019   22:34:05   (   0.02,-137.09) (  -0.09,-137.61)   58.84                80
 06/01/2019   22:18:00   (   0.02,-137.07) (   0.91,-133.07)  455.71                80
 06/03/2019   10:39:49   (  -0.03,-137.07) (   0.29,-138.34)  145.24                80
 06/04/2019   10:18:25   (  -0.03,-137.05) (  -0.77,-133.82)  368.40                80