Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 9 27.  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)
 09/28/2017   12:46:53   (   0.15,-135.47) (   1.11,-139.48)  458.98                80
 09/29/2017   12:35:25   (   0.15,-135.47) (   0.44,-136.69)  139.46                80
 09/30/2017   12:26:36   (   0.16,-135.47) (  -0.22,-133.90)  179.89                80
 10/01/2017   12:15:07   (   0.16,-135.47) (  -0.83,-131.09)  499.14                80
 10/03/2017   00:45:29   (  -0.12,-135.36) (  -0.93,-139.03)  417.30                80
 10/04/2017   00:34:00   (  -0.13,-135.36) (  -0.31,-136.22)   98.03                80
 10/05/2017   00:25:10   (  -0.13,-135.36) (   0.32,-133.42)  221.05                80
 10/07/2017   12:44:00   (   0.10,-135.44) (   0.84,-138.54)  353.55                80
 10/08/2017   12:32:32   (   0.11,-135.43) (   0.16,-135.75)   35.34                80
 10/09/2017   12:23:42   (   0.12,-135.42) (  -0.46,-132.94)  282.73                80