Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 4 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/02/2015   22:39:25   (  -0.04,-134.47) (  -0.71,-137.42)  336.56                80
 04/03/2015   22:23:19   (  -0.03,-134.42) (   0.28,-132.88)  174.75                80
 04/05/2015   10:45:05   (   0.04,-134.36) (   0.86,-138.15)  431.76                80
 04/06/2015   10:23:39   (   0.03,-134.30) (  -0.14,-133.62)   78.71                80
 04/08/2015   22:26:46   (  -0.03,-134.13) (  -0.08,-134.37)   27.22                80
 04/09/2015   22:10:39   (  -0.03,-134.07) (   0.91,-129.83)  483.00                80
 04/11/2015   10:32:24   (   0.04,-134.00) (   0.28,-135.10)  124.84                80
 04/12/2015   10:10:58   (   0.04,-133.93) (  -0.72,-130.56)  384.59                80
 04/13/2015   22:32:51   (  -0.04,-133.80) (  -0.48,-135.86)  233.55                80
 04/14/2015   22:16:45   (  -0.04,-133.73) (   0.53,-131.32)  276.01                80
 04/16/2015   10:38:29   (   0.04,-133.66) (   0.71,-136.57)  332.16                80