Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 10 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/12/2018   10:27:35   (   0.27,-135.63) (   0.16,-135.16)   53.62                80
 10/14/2018   22:28:06   (  -0.26,-135.56) (  -0.35,-135.94)   43.01                80
 10/15/2018   22:12:01   (  -0.27,-135.55) (   0.68,-131.41)  472.33                80
 10/17/2018   10:31:10   (   0.24,-135.58) (   0.46,-136.69)  126.60                80
 10/18/2018   10:15:04   (   0.25,-135.56) (  -0.52,-132.15)  387.97                80
 10/19/2018   22:34:20   (  -0.22,-135.48) (  -0.65,-137.46)  225.86                80
 10/20/2018   22:18:15   (  -0.23,-135.46) (   0.32,-132.93)  288.95                80
 10/22/2018   10:37:23   (   0.21,-135.49) (   0.81,-138.21)  309.71                80
 10/23/2018   10:21:18   (   0.22,-135.47) (  -0.17,-133.67)  204.33                80
 10/24/2018   22:40:34   (  -0.19,-135.37) (  -1.00,-138.98)  411.51                80