Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 9 30.  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)
 10/01/2017   12:15:07   (   0.16,-135.47) (  -0.85,-131.10)  499.39                80
 10/03/2017   00:45:29   (  -0.12,-135.36) (  -0.97,-139.02)  417.04                80
 10/04/2017   00:33:59   (  -0.13,-135.36) (  -0.35,-136.21)   97.74                80
 10/05/2017   00:25:11   (  -0.13,-135.36) (   0.34,-133.43)  221.43                80
 10/07/2017   12:44:01   (   0.10,-135.45) (   0.82,-138.54)  352.92                80
 10/08/2017   12:32:31   (   0.11,-135.44) (   0.20,-135.74)   34.68                80
 10/09/2017   12:23:43   (   0.12,-135.42) (  -0.48,-132.95)  283.43                80
 10/12/2017   00:42:32   (  -0.08,-135.27) (  -0.72,-138.06)  317.42                80
 10/13/2017   00:33:43   (  -0.09,-135.25) (  -0.09,-135.25)    0.18                80
 10/14/2017   00:22:13   (  -0.09,-135.24) (   0.55,-132.45)  317.74                80