Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 8 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/23/2015   10:15:34   (   0.39,-134.85) (  -0.23,-132.08)  315.03                80
 08/24/2015   22:37:29   (  -0.39,-134.92) (  -0.91,-137.40)  281.51                80
 08/25/2015   22:21:23   (  -0.38,-134.95) (   0.06,-132.85)  238.37                80
 08/27/2015   10:43:10   (   0.38,-134.97) (   1.06,-138.13)  359.79                80
 08/28/2015   10:21:44   (   0.38,-135.00) (   0.09,-133.59)  159.46                80
 08/29/2015   22:43:39   (  -0.37,-135.05) (  -1.22,-138.91)  438.81                80
 08/30/2015   22:27:32   (  -0.38,-135.08) (  -0.24,-134.36)   80.53                80
 09/02/2015   10:27:53   (   0.37,-135.11) (   0.39,-135.10)    1.60                80
 09/04/2015   22:31:02   (  -0.37,-135.17) (  -0.53,-135.88)   80.69                80