Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2016 6 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)
 06/29/2016   22:25:04   (   0.09,-135.53) (   0.30,-134.50)  116.53                80
 07/01/2016   10:44:11   (  -0.11,-135.53) (   0.86,-139.77)  483.58                80
 07/02/2016   10:28:07   (  -0.10,-135.53) (  -0.18,-135.25)   33.02                80
 07/04/2016   22:28:37   (   0.11,-135.52) (  -0.02,-136.01)   56.66                80
 07/05/2016   22:12:33   (   0.10,-135.52) (   1.02,-131.49)  459.73                80
 07/07/2016   10:31:40   (  -0.13,-135.52) (   0.13,-136.76)  141.20                80
 07/08/2016   10:15:35   (  -0.12,-135.51) (  -0.85,-132.22)  375.01                80
 07/09/2016   22:34:51   (   0.14,-135.50) (  -0.32,-137.53)  231.57                80
 07/10/2016   22:18:46   (   0.13,-135.49) (   0.67,-132.99)  284.45                80
 07/12/2016   10:37:53   (  -0.15,-135.48) (   0.49,-138.26)  317.21                80
 07/13/2016   10:21:48   (  -0.14,-135.47) (  -0.55,-133.74)  198.42                80