Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 9 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/26/2019   09:40:35   (   0.32,-127.76) (  -0.46,-124.19)  405.96                80
 09/27/2019   22:02:32   (  -0.30,-127.68) (  -0.72,-129.50)  206.91                80
 09/28/2019   21:46:27   (  -0.31,-127.65) (   0.31,-124.97)  306.05                80
 09/30/2019   10:05:35   (   0.29,-127.61) (   0.89,-130.23)  298.09                80
 10/01/2019   09:49:30   (   0.30,-127.57) (  -0.14,-125.70)  214.28                80
 10/02/2019   22:08:45   (  -0.28,-127.48) (  -1.09,-130.99)  400.08                80
 10/03/2019   21:52:41   (  -0.29,-127.44) (  -0.06,-126.46)  112.31                80
 10/05/2019   10:11:48   (   0.27,-127.41) (   1.26,-131.72)  492.11                80
 10/06/2019   09:55:44   (   0.28,-127.36) (   0.23,-127.19)   19.66                80
 10/08/2019   21:56:15   (  -0.26,-127.22) (  -0.42,-127.96)   84.19                80