Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 7 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/26/2018   22:27:39   (   0.24,-135.51) (   0.14,-135.95)   49.98                80
 07/27/2018   22:11:36   (   0.23,-135.50) (   1.17,-131.42)  465.79                80
 07/29/2018   10:30:44   (  -0.26,-135.47) (   0.02,-136.69)  139.61                80
 07/30/2018   10:14:41   (  -0.25,-135.46) (  -1.01,-132.17)  375.73                80
 07/31/2018   22:33:58   (   0.27,-135.46) (  -0.20,-137.47)  229.08                80
 08/01/2018   22:17:55   (   0.26,-135.45) (   0.84,-132.95)  286.15                80
 08/03/2018   10:37:03   (  -0.29,-135.41) (   0.35,-138.21)  319.87                80
 08/04/2018   10:20:59   (  -0.28,-135.39) (  -0.68,-133.69)  194.67                80
 08/05/2018   22:40:17   (   0.30,-135.38) (  -0.52,-138.99)  411.94                80
 08/06/2018   22:24:13   (   0.29,-135.36) (   0.52,-134.47)  102.19                80
 08/09/2018   10:24:37   (  -0.31,-135.28) (  -0.30,-135.20)    8.61                80