Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 10 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)
 10/06/2018   10:40:05   (   0.28,-135.66) (   0.84,-138.17)  286.67                80
 10/07/2018   10:18:40   (   0.29,-135.65) (  -0.13,-133.63)  229.43                80
 10/08/2018   22:40:36   (  -0.27,-135.62) (  -1.04,-138.94)  379.84                80
 10/09/2018   22:24:32   (  -0.28,-135.62) (  -0.01,-134.42)  136.67                80
 10/11/2018   10:43:40   (   0.26,-135.65) (   1.16,-139.70)  461.16                80
 10/12/2018   10:24:55   (   0.27,-135.64) (   0.19,-135.16)   54.49                80
 10/14/2018   22:28:06   (  -0.26,-135.58) (  -0.32,-135.95)   41.17                80
 10/15/2018   22:12:01   (  -0.27,-135.57) (   0.65,-131.41)  474.48                80
 10/17/2018   10:31:09   (   0.24,-135.60) (   0.49,-136.69)  124.32                80
 10/18/2018   10:15:05   (   0.25,-135.58) (  -0.54,-132.16)  390.48                80