Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 9 8.  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)
 09/09/2017   00:22:22   (  -0.27,-135.04) (   0.12,-133.46)  181.28                80
 09/11/2017   12:41:06   (   0.24,-135.20) (   1.01,-138.56)  382.92                80
 09/12/2017   12:29:38   (   0.25,-135.23) (   0.37,-135.76)   61.17                80
 09/13/2017   12:20:49   (   0.25,-135.25) (  -0.28,-132.97)  260.37                80
 09/16/2017   00:39:47   (  -0.22,-135.21) (  -0.89,-138.12)  332.02                80
 09/17/2017   00:28:19   (  -0.22,-135.23) (  -0.22,-135.33)   10.86                80
 09/18/2017   00:19:29   (  -0.23,-135.25) (   0.39,-132.52)  310.96                80
 09/20/2017   12:38:16   (   0.19,-135.39) (   0.74,-137.63)  256.02                80
 09/21/2017   12:29:28   (   0.20,-135.41) (   0.09,-134.84)   65.04                80
 09/22/2017   12:17:59   (   0.21,-135.43) (  -0.57,-132.04)  385.95                80