Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 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)
 07/29/2019   09:49:38   (  -0.24,-128.21) (  -0.76,-125.90)  262.65                80
 07/30/2019   22:08:56   (   0.26,-128.22) (  -0.40,-131.21)  341.57                80
 07/31/2019   21:52:51   (   0.25,-128.24) (   0.61,-126.68)  177.08                80
 08/02/2019   10:12:00   (  -0.28,-128.28) (   0.54,-131.96)  418.56                80
 08/03/2019   09:55:55   (  -0.27,-128.30) (  -0.47,-127.43)   99.78                80
 08/05/2019   21:59:08   (   0.28,-128.32) (   0.32,-128.21)   13.34                80
 08/08/2019   09:59:32   (  -0.29,-128.37) (  -0.19,-128.95)   64.83                80
 08/09/2019   09:43:27   (  -0.28,-128.39) (  -1.20,-124.42)  452.96                80
 08/10/2019   22:02:44   (   0.30,-128.37) (  -0.01,-129.72)  153.18                80