Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 9 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 09/22/2017   12:17:59   (   0.21,-135.41) (  -0.57,-132.04)  385.31                80
 09/25/2017   00:36:54   (  -0.18,-135.35) (  -0.61,-137.17)  207.87                80
 09/26/2017   00:28:06   (  -0.18,-135.36) (   0.07,-134.38)  112.63                80
 09/27/2017   00:16:36   (  -0.19,-135.37) (   0.69,-131.58)  433.00                80
 09/28/2017   12:46:53   (   0.15,-135.47) (   1.10,-139.49)  458.67                80
 09/29/2017   12:35:25   (   0.15,-135.48) (   0.44,-136.69)  139.01                80
 09/30/2017   12:26:36   (   0.16,-135.48) (  -0.22,-133.90)  180.50                80
 10/01/2017   12:15:07   (   0.16,-135.48) (  -0.82,-131.09)  499.89                80
 10/03/2017   00:45:29   (  -0.12,-135.38) (  -0.94,-139.03)  415.81                80
 10/04/2017   00:34:00   (  -0.13,-135.38) (  -0.31,-136.23)   96.39                80
 10/05/2017   00:25:10   (  -0.13,-135.38) (   0.32,-133.42)  222.82                80