Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/24/2019   10:02:02   (   0.38,-128.43) (   0.48,-128.78)   41.27                80
 08/25/2019   09:40:37   (   0.37,-128.42) (  -0.53,-124.25)  474.09                80
 08/26/2019   22:02:35   (  -0.38,-128.40) (  -0.61,-129.57)  132.32                80
 08/27/2019   21:46:30   (  -0.37,-128.39) (   0.41,-125.04)  383.14                80
 08/29/2019   10:08:17   (   0.38,-128.38) (   0.79,-130.30)  217.79                80
 08/30/2019   09:46:53   (   0.37,-128.37) (  -0.22,-125.77)  296.99                80
 08/31/2019   22:08:49   (  -0.37,-128.34) (  -0.97,-131.07)  310.89                80
 09/01/2019   21:52:45   (  -0.37,-128.33) (   0.05,-126.54)  204.33                80
 09/03/2019   10:14:32   (   0.37,-128.32) (   1.16,-131.80)  396.37                80
 09/04/2019   09:53:08   (   0.37,-128.30) (   0.14,-127.27)  118.13                80
 09/05/2019   22:15:04   (  -0.37,-128.26) (  -1.33,-132.57)  491.33                80
 09/06/2019   21:58:59   (  -0.37,-128.24) (  -0.30,-128.04)   23.37                80