Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 10 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/17/2018   10:31:09   (   0.24,-135.57) (   0.49,-136.68)  127.13                80
 10/18/2018   10:15:04   (   0.25,-135.55) (  -0.49,-132.15)  387.21                80
 10/19/2018   22:34:20   (  -0.22,-135.47) (  -0.68,-137.46)  227.13                80
 10/20/2018   22:18:16   (  -0.23,-135.45) (   0.35,-132.93)  287.49                80
 10/22/2018   10:37:23   (   0.21,-135.47) (   0.84,-138.20)  311.25                80
 10/23/2018   10:21:18   (   0.22,-135.45) (  -0.20,-133.68)  202.60                80
 10/24/2018   22:40:34   (  -0.19,-135.35) (  -1.03,-138.97)  413.80                80
 10/25/2018   22:24:29   (  -0.21,-135.32) (   0.01,-134.45)  100.07                80
 10/27/2018   10:43:36   (   0.18,-135.34) (   1.18,-139.72)  499.15                80
 10/28/2018   10:27:32   (   0.19,-135.31) (   0.14,-135.19)   13.90                80