Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 8 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/27/2015   10:43:10   (   0.38,-134.97) (   1.08,-138.13)  359.81                80
 08/28/2015   10:21:44   (   0.38,-134.99) (   0.05,-133.60)  159.38                80
 08/29/2015   22:43:38   (  -0.37,-135.05) (  -1.25,-138.90)  438.82                80
 08/30/2015   22:27:33   (  -0.38,-135.07) (  -0.22,-134.37)   80.43                80
 09/02/2015   10:30:34   (   0.37,-135.11) (   0.36,-135.11)    1.26                80
 09/04/2015   22:31:03   (  -0.37,-135.17) (  -0.52,-135.88)   80.93                80
 09/05/2015   22:14:57   (  -0.37,-135.18) (   0.51,-131.35)  437.52                80
 09/07/2015   10:36:44   (   0.36,-135.19) (   0.66,-136.62)  162.43                80
 09/08/2015   10:15:17   (   0.36,-135.20) (  -0.31,-132.08)  355.53                80
 09/09/2015   22:37:12   (  -0.34,-135.23) (  -0.82,-137.39)  245.63                80