Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2015 5 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/29/2015   10:29:12   (   0.02,-135.18) (   0.05,-135.17)    2.81                80
 05/31/2015   22:32:24   (  -0.01,-135.09) (  -0.19,-135.96)   98.99                80
 06/01/2015   22:16:18   (  -0.02,-135.06) (   0.79,-131.42)  414.07                80
 06/03/2015   10:35:26   (   0.00,-135.03) (   0.38,-136.70)  190.46                80
 06/04/2015   10:19:20   (   0.01,-134.99) (  -0.60,-132.16)  322.12                80
 06/05/2015   22:38:36   (   0.01,-134.91) (  -0.58,-137.47)  291.64                80
 06/06/2015   22:22:31   (  -0.00,-134.88) (   0.40,-132.93)  220.61                80
 06/08/2015   10:41:38   (  -0.01,-134.83) (   0.76,-138.21)  385.11                80
 06/09/2015   10:25:34   (  -0.00,-134.79) (  -0.28,-133.69)  126.84                80
 06/10/2015   22:44:49   (   0.02,-134.71) (  -0.95,-138.98)  487.97                80
 06/11/2015   22:28:44   (   0.01,-134.66) (   0.03,-134.45)   23.80                80