Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 5 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)
 05/09/2015   22:44:57   (  -0.05,-135.41) (  -0.83,-138.92)  399.82                80
 05/10/2015   22:28:53   (  -0.06,-135.41) (   0.19,-134.40)  115.68                80
 05/12/2015   10:48:00   (   0.05,-135.43) (   1.02,-139.66)  483.40                80
 05/13/2015   10:31:55   (   0.06,-135.42) (  -0.00,-135.14)   31.78                80
 05/15/2015   22:32:27   (  -0.05,-135.36) (  -0.17,-135.92)   64.20                80
 05/16/2015   22:16:23   (  -0.05,-135.34) (   0.86,-131.40)  450.48                80
 05/18/2015   10:35:30   (   0.04,-135.35) (   0.35,-136.67)  149.90                80
 05/19/2015   10:19:26   (   0.05,-135.34) (  -0.68,-132.14)  364.48                80
 05/20/2015   22:38:42   (  -0.04,-135.28) (  -0.51,-137.45)  247.51                80
 05/21/2015   22:22:36   (  -0.04,-135.26) (   0.46,-132.91)  266.70                80