Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 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)
 10/06/2015   22:30:34   (  -0.24,-135.01) (  -0.44,-135.88)   98.23                80
 10/07/2015   22:14:29   (  -0.25,-134.99) (   0.56,-131.34)  415.76                80
 10/09/2015   10:33:36   (   0.22,-134.94) (   0.59,-136.62)  191.39                80
 10/10/2015   10:17:31   (   0.24,-134.91) (  -0.41,-132.09)  322.04                80
 10/11/2015   22:36:47   (  -0.21,-134.88) (  -0.75,-137.40)  287.34                80
 10/12/2015   22:20:42   (  -0.22,-134.85) (   0.24,-132.87)  226.24                80
 10/14/2015   10:39:48   (   0.20,-134.79) (   0.96,-138.13)  381.00                80
 10/15/2015   10:23:42   (   0.21,-134.76) (  -0.04,-133.60)  131.71                80
 10/16/2015   22:42:59   (  -0.18,-134.70) (  -1.11,-138.92)  479.85                80
 10/17/2015   22:26:53   (  -0.20,-134.67) (  -0.11,-134.38)   32.82                80