Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 11 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/23/2015   22:30:15   (  -0.01,-135.46) (  -0.14,-136.01)   63.08                80
 11/24/2015   22:14:10   (  -0.03,-135.46) (   0.85,-131.47)  453.83                80
 11/26/2015   10:33:18   (   0.01,-135.48) (   0.27,-136.76)  145.90                80
 11/27/2015   10:17:12   (   0.02,-135.47) (  -0.71,-132.22)  370.34                80
 11/28/2015   22:36:29   (   0.01,-135.45) (  -0.44,-137.54)  237.79                80
 11/29/2015   22:20:23   (  -0.01,-135.44) (   0.55,-133.00)  278.54                80
 12/01/2015   10:39:30   (  -0.02,-135.46) (   0.63,-138.28)  321.26                80
 12/02/2015   10:23:25   (  -0.01,-135.45) (  -0.36,-133.74)  194.56                80
 12/03/2015   22:42:41   (   0.03,-135.42) (  -0.78,-139.06)  414.71                80
 12/04/2015   22:26:36   (   0.02,-135.41) (   0.22,-134.52)  101.18                80
 12/06/2015   10:45:43   (  -0.04,-135.42) (   0.96,-139.79)  498.66                80