Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 7 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)
 07/06/2015   10:19:05   (  -0.11,-134.93) (  -0.72,-132.22)  308.78                80
 07/07/2015   22:38:21   (   0.13,-134.95) (  -0.42,-137.54)  293.63                80
 07/08/2015   22:22:16   (   0.12,-134.98) (   0.58,-133.00)  225.30                80
 07/10/2015   10:41:22   (  -0.14,-135.01) (   0.61,-138.27)  371.66                80
 07/11/2015   10:25:17   (  -0.14,-135.03) (  -0.40,-133.74)  147.02                80
 07/12/2015   22:44:33   (   0.16,-135.05) (  -0.73,-139.05)  456.19                80
 07/13/2015   22:28:27   (   0.15,-135.07) (   0.27,-134.52)   62.02                80
 07/16/2015   10:28:49   (  -0.16,-135.11) (  -0.15,-135.27)   18.00                80
 07/18/2015   22:31:59   (   0.18,-135.13) (  -0.02,-136.04)  103.46                80