Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 4 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/07/2015   22:48:14   (  -0.04,-134.81) (  -0.98,-138.93)  470.50                80
 04/08/2015   22:26:53   (  -0.04,-134.84) (   0.08,-134.41)   50.29                75
 04/11/2015   10:32:28   (   0.04,-134.97) (   0.06,-135.15)   19.19                80
 04/13/2015   22:35:35   (  -0.05,-135.00) (  -0.27,-135.90)  103.12                80
 04/14/2015   22:16:50   (  -0.05,-135.03) (   0.79,-131.38)  416.75                80
 04/16/2015   10:38:35   (   0.05,-135.12) (   0.40,-136.64)  173.95                80
 04/17/2015   10:17:08   (   0.05,-135.14) (  -0.60,-132.11)  345.39                80
 04/18/2015   22:41:43   (  -0.05,-135.13) (  -0.53,-137.42)  259.83                80
 04/19/2015   22:21:31   (  -0.04,-135.15) (   0.47,-132.88)  259.37                 5