Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 7 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/28/2020   21:46:02   (  -0.01,-128.36) (   0.72,-125.03)  379.84                80
 07/30/2020   10:07:52   (  -0.01,-128.41) (   0.40,-130.31)  216.24                80
 07/31/2020   09:46:27   (  -0.01,-128.40) (  -0.59,-125.78)  299.22                80
 08/01/2020   22:08:25   (   0.01,-128.33) (  -0.60,-131.08)  313.00                80
 08/02/2020   21:52:20   (   0.01,-128.33) (   0.39,-126.55)  202.43                80
 08/04/2020   10:14:08   (  -0.01,-128.37) (   0.79,-131.82)  393.32                80
 08/05/2020   09:52:45   (  -0.00,-128.36) (  -0.26,-127.30)  121.93                80
 08/06/2020   22:14:41   (   0.00,-128.29) (  -0.98,-132.59)  490.80                80
 08/07/2020   21:58:38   (   0.00,-128.28) (   0.07,-128.07)   24.51                80
 08/10/2020   10:01:42   (  -0.00,-128.31) (   0.12,-128.80)   56.65                80
 08/11/2020   09:40:18   (  -0.00,-128.29) (  -0.93,-124.28)  458.10                80