Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 8 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/16/2018   22:34:09   (   0.35,-135.12) (  -0.20,-137.49)  271.16                80
 08/17/2018   22:18:04   (   0.34,-135.09) (   0.79,-132.96)  241.95                80
 08/19/2018   10:37:14   (  -0.36,-135.01) (   0.35,-138.24)  367.65                80
 08/20/2018   10:21:09   (  -0.35,-134.97) (  -0.63,-133.70)  144.80                80
 08/21/2018   22:40:27   (   0.37,-134.94) (  -0.55,-139.01)  463.78                80
 08/22/2018   22:24:23   (   0.37,-134.90) (   0.49,-134.48)   48.65                80
 08/25/2018   10:24:47   (  -0.38,-134.78) (  -0.28,-135.21)   49.63                80
 08/26/2018   10:08:42   (  -0.38,-134.74) (  -1.26,-130.68)  462.10                80
 08/27/2018   22:28:00   (   0.39,-134.70) (   0.08,-135.99)  147.52                80
 08/28/2018   22:11:55   (   0.38,-134.65) (   1.07,-131.45)  364.21                80