Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 11 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/10/2017   10:24:59   (   0.09,-134.69) (   0.21,-135.24)   63.51                80
 11/11/2017   10:08:54   (   0.10,-134.73) (  -0.83,-130.72)  457.86                80
 11/12/2017   22:28:11   (  -0.07,-134.70) (  -0.36,-136.02)  150.42                80
 11/13/2017   22:12:05   (  -0.08,-134.75) (   0.62,-131.49)  371.13                80
 11/15/2017   10:31:13   (   0.06,-134.91) (   0.50,-136.77)  212.27                80
 11/16/2017   10:15:09   (   0.07,-134.95) (  -0.54,-132.24)  308.86                80
 11/17/2017   22:34:25   (  -0.05,-134.92) (  -0.64,-137.55)  300.42                80
 11/18/2017   22:18:20   (  -0.06,-134.95) (   0.34,-133.01)  220.55                80
 11/20/2017   10:37:28   (   0.04,-135.11) (   0.77,-138.30)  363.60                80
 11/21/2017   10:21:24   (   0.05,-135.15) (  -0.26,-133.77)  156.78                80
 11/22/2017   22:40:40   (  -0.03,-135.09) (  -0.91,-139.08)  453.94                80