Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 3 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)
 03/06/2015   22:46:16   (   0.02,-135.33) (  -0.81,-139.00)  418.47                80
 03/07/2015   22:30:11   (   0.02,-135.32) (   0.20,-134.47)   96.56                80
 03/10/2015   10:30:31   (  -0.02,-135.29) (  -0.05,-135.21)    9.73                80
 03/12/2015   22:33:40   (   0.02,-135.22) (  -0.16,-135.98)   86.42                80
 03/13/2015   22:17:35   (   0.02,-135.20) (   0.87,-131.45)  427.53                80
 03/15/2015   10:39:21   (  -0.01,-135.18) (   0.31,-136.72)  174.99                80
 03/16/2015   10:17:55   (  -0.01,-135.15) (  -0.66,-132.18)  338.15                80
 03/17/2015   22:39:49   (   0.01,-135.08) (  -0.55,-137.47)  273.98                80
 03/18/2015   22:23:43   (   0.01,-135.05) (   0.47,-132.95)  239.23                80