Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/28/2015   22:40:37   (   0.09,-134.88) (  -0.47,-137.46)  293.93                80
 01/29/2015   22:24:29   (   0.09,-134.92) (   0.51,-132.92)  227.62                80
 01/31/2015   10:46:14   (  -0.08,-134.99) (   0.60,-138.20)  364.80                80
 02/01/2015   10:24:47   (  -0.08,-135.03) (  -0.38,-133.65)  156.16                80
 02/02/2015   22:46:40   (   0.08,-135.07) (  -0.80,-138.95)  442.72                80
 02/03/2015   22:30:34   (   0.08,-135.11) (   0.24,-134.42)   78.32                80
 02/06/2015   10:30:52   (  -0.07,-135.21) (  -0.11,-135.16)    7.07                80
 02/08/2015   22:33:57   (   0.07,-135.27) (  -0.07,-135.91)   73.41                80
 02/09/2015   22:17:51   (   0.07,-135.30) (   0.97,-131.38)  446.85                80