Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 5 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/19/2019   10:18:18   (  -0.01,-137.21) (  -0.78,-133.80)  388.31                80
 05/20/2019   22:40:15   (   0.02,-137.18) (  -0.39,-139.11)  218.93                80
 05/21/2019   22:24:11   (   0.02,-137.18) (   0.60,-134.58)  297.19                80
 05/23/2019   10:45:59   (  -0.02,-137.20) (   0.60,-139.84)  301.45                80
 05/24/2019   10:24:36   (  -0.01,-137.20) (  -0.46,-135.32)  214.26                80
 05/25/2019   22:46:32   (   0.01,-137.16) (  -0.77,-140.62)  394.24                80
 05/26/2019   22:30:27   (   0.00,-137.16) (   0.22,-136.09)  121.53                80
 05/28/2019   10:52:17   (  -0.01,-137.17) (   0.92,-141.37)  477.43                80
 05/29/2019   10:30:52   (  -0.00,-137.16) (  -0.08,-136.83)   37.64                80
 05/31/2019   22:34:05   (   0.01,-137.10) (  -0.09,-137.61)   57.62                80
 06/01/2019   22:18:01   (   0.01,-137.09) (   0.91,-133.07)  457.10                80