Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 3 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/01/2015   22:40:06   (   0.02,-135.40) (  -0.47,-137.49)  238.71                80
 03/02/2015   22:24:00   (   0.02,-135.40) (   0.54,-132.95)  277.54                80
 03/04/2015   10:45:46   (  -0.02,-135.40) (   0.64,-138.23)  322.33                80
 03/05/2015   10:24:21   (  -0.02,-135.39) (  -0.37,-133.69)  193.19                80
 03/06/2015   22:46:16   (   0.02,-135.37) (  -0.80,-139.00)  414.33                80
 03/07/2015   22:30:11   (   0.02,-135.36) (   0.22,-134.47)  101.28                80
 03/09/2015   10:51:57   (  -0.02,-135.37) (   0.96,-139.74)  498.93                80
 03/10/2015   10:30:32   (  -0.02,-135.35) (  -0.05,-135.21)   15.82                80
 03/12/2015   22:33:41   (   0.02,-135.29) (  -0.15,-135.98)   78.88                80
 03/13/2015   22:17:35   (   0.01,-135.27) (   0.88,-131.45)  435.65                80