Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 8 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/25/2015   22:21:23   (  -0.38,-134.95) (   0.06,-132.85)  238.57                80
 08/27/2015   10:43:10   (   0.38,-134.97) (   1.06,-138.13)  359.70                80
 08/28/2015   10:21:44   (   0.38,-135.00) (   0.09,-133.59)  159.55                80
 08/29/2015   22:43:39   (  -0.37,-135.05) (  -1.22,-138.90)  438.63                80
 08/30/2015   22:27:33   (  -0.38,-135.08) (  -0.19,-134.37)   80.72                80
 09/02/2015   10:27:53   (   0.37,-135.11) (   0.39,-135.10)    1.89                80
 09/04/2015   22:31:02   (  -0.37,-135.17) (  -0.54,-135.87)   80.56                80
 09/05/2015   22:14:57   (  -0.37,-135.19) (   0.49,-131.34)  437.95                80
 09/07/2015   10:36:43   (   0.35,-135.19) (   0.67,-136.61)  161.94                80
 09/08/2015   10:15:17   (   0.36,-135.20) (  -0.36,-132.09)  356.06                80