Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2014 11 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/20/2014   22:36:06   (  -0.00,-134.92) (  -0.22,-136.01)  123.48                80
 11/21/2014   22:20:01   (  -0.02,-134.95) (   0.78,-131.47)  396.88                80
 11/23/2014   10:39:08   (  -0.01,-135.02) (   0.37,-136.76)  197.35                80
 11/24/2014   10:23:02   (   0.01,-135.05) (  -0.63,-132.22)  322.15                80
 11/25/2014   22:42:18   (   0.02,-135.06) (  -0.54,-137.54)  281.86                80
 11/26/2014   22:26:12   (   0.01,-135.09) (   0.47,-133.01)  237.47                80
 11/28/2014   10:45:20   (  -0.03,-135.15) (   0.67,-138.29)  357.46                80
 11/29/2014   10:29:14   (  -0.02,-135.17) (  -0.34,-133.76)  161.34                80
 11/30/2014   22:48:29   (   0.05,-135.17) (  -0.82,-139.07)  443.98                80
 12/01/2014   22:32:24   (   0.03,-135.19) (   0.20,-134.54)   74.91                80
 12/04/2014   10:32:45   (  -0.04,-135.27) (  -0.03,-135.28)    1.95                80