Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/29/2019   10:08:18   (   0.38,-128.39) (   0.78,-130.30)  216.66                80
 08/30/2019   09:46:53   (   0.37,-128.38) (  -0.24,-125.77)  298.46                80
 08/31/2019   22:08:50   (  -0.37,-128.36) (  -0.96,-131.07)  308.68                80
 09/01/2019   21:52:45   (  -0.37,-128.35) (   0.06,-126.54)  206.87                80
 09/03/2019   10:14:32   (   0.37,-128.35) (   1.14,-131.80)  393.64                80
 09/04/2019   09:53:08   (   0.37,-128.33) (   0.12,-127.27)  121.17                80
 09/05/2019   22:15:04   (  -0.37,-128.29) (  -1.32,-132.57)  487.55                80
 09/06/2019   21:59:00   (  -0.37,-128.28) (  -0.29,-128.04)   27.45                80
 09/09/2019   10:02:03   (   0.36,-128.25) (   0.48,-128.77)   59.21                80
 09/10/2019   09:40:38   (   0.36,-128.23) (  -0.54,-124.24)  455.02                80
 09/11/2019   22:02:34   (  -0.35,-128.18) (  -0.64,-129.54)  154.86                80