Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 7 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/05/2016   22:12:33   (   0.11,-135.51) (   1.02,-131.49)  459.18                80
 07/07/2016   10:31:40   (  -0.13,-135.51) (   0.13,-136.76)  142.08                80
 07/08/2016   10:15:35   (  -0.12,-135.50) (  -0.85,-132.22)  373.96                80
 07/09/2016   22:34:51   (   0.14,-135.49) (  -0.33,-137.53)  232.84                80
 07/10/2016   22:18:46   (   0.13,-135.48) (   0.66,-132.99)  282.98                80
 07/12/2016   10:37:53   (  -0.15,-135.47) (   0.50,-138.26)  319.07                80
 07/13/2016   10:21:49   (  -0.14,-135.46) (  -0.55,-133.74)  196.38                80
 07/14/2016   22:41:05   (   0.17,-135.43) (  -0.62,-139.04)  411.45                80
 07/15/2016   22:24:59   (   0.16,-135.41) (   0.37,-134.51)  103.53                80
 07/17/2016   10:44:07   (  -0.18,-135.39) (   0.79,-139.78)  499.89                80
 07/18/2016   10:28:01   (  -0.18,-135.37) (  -0.20,-135.24)   14.66                80