Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2017 8 7.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/07/2017   10:05:35   (   0.32,-134.79) (  -0.67,-130.51)  488.02                80
 08/08/2017   22:27:33   (  -0.34,-134.84) (  -0.55,-135.81)  110.33                80
 08/09/2017   22:11:29   (  -0.33,-134.87) (   0.49,-131.29)  408.39                80
 08/11/2017   10:33:17   (   0.35,-134.89) (   0.74,-136.55)  189.76                80
 08/12/2017   10:11:54   (   0.34,-134.90) (  -0.29,-132.03)  327.62                80
 08/13/2017   22:33:51   (  -0.36,-134.94) (  -0.91,-137.33)  273.47                80
 08/14/2017   22:17:48   (  -0.35,-134.95) (   0.12,-132.81)  244.37                80
 08/16/2017   10:39:37   (   0.36,-134.97) (   1.05,-138.08)  354.05                80
 08/17/2017   10:18:14   (   0.35,-134.98) (   0.02,-133.56)  162.30                80
 08/18/2017   22:40:11   (  -0.36,-134.98) (  -1.21,-138.86)  441.90                80
 08/19/2017   22:24:07   (  -0.35,-134.99) (  -0.18,-134.34)   75.17                80