Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 11 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/23/2017   22:24:34   (  -0.04,-135.08) (   0.06,-134.53)   62.06                80
 11/26/2017   10:27:38   (   0.03,-135.25) (   0.02,-135.29)    5.49                80
 11/28/2017   22:28:09   (  -0.02,-135.20) (  -0.20,-136.06)   98.11                80
 11/29/2017   22:12:03   (  -0.03,-135.22) (   0.78,-131.53)  420.68                80
 12/01/2017   10:31:12   (   0.01,-135.35) (   0.33,-136.81)  166.82                80
 12/02/2017   10:15:06   (   0.02,-135.36) (  -0.65,-132.27)  351.42                80
 12/03/2017   22:34:23   (  -0.00,-135.28) (  -0.50,-137.58)  262.32                80
 12/04/2017   22:18:17   (  -0.01,-135.29) (   0.48,-133.04)  255.37                80
 12/06/2017   10:37:25   (  -0.00,-135.40) (   0.63,-138.33)  333.78                80
 12/07/2017   10:21:20   (   0.01,-135.40) (  -0.35,-133.79)  183.57                80