Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 6 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/01/2019   22:18:00   (   0.00,-137.19) (   0.90,-133.07)  468.51                80
 06/03/2019   10:39:50   (  -0.01,-137.21) (   0.24,-138.35)  130.25                80
 06/04/2019   10:18:25   (  -0.01,-137.20) (  -0.76,-133.82)  385.46                80
 06/05/2019   22:40:23   (   0.01,-137.17) (  -0.40,-139.13)  222.57                80
 06/06/2019   22:24:18   (   0.02,-137.16) (   0.60,-134.59)  292.86                80
 06/08/2019   10:46:06   (  -0.01,-137.17) (   0.59,-139.86)  306.89                80
 06/09/2019   10:24:42   (  -0.01,-137.16) (  -0.40,-135.33)  208.30                80
 06/10/2019   22:46:38   (   0.00,-137.12) (  -0.81,-140.63)  400.81                80
 06/11/2019   22:30:35   (   0.00,-137.10) (   0.25,-136.11)  114.30                80
 06/13/2019   10:52:23   (  -0.01,-137.11) (   0.95,-141.38)  486.04                80
 06/14/2019   10:30:59   (  -0.01,-137.09) (  -0.05,-136.84)   28.44                80