Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 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)
 09/22/2018   01:20:52   (  -0.18,-135.48) (  -0.36,-136.31)   94.33                80
 09/23/2018   01:11:57   (  -0.19,-135.49) (   0.31,-133.48)  230.14                80
 09/25/2018   13:30:26   (   0.15,-135.63) (   0.80,-138.51)  328.46                80
 09/26/2018   13:21:32   (   0.15,-135.64) (   0.15,-135.68)    4.88                80
 09/27/2018   13:09:57   (   0.16,-135.65) (  -0.50,-132.86)  319.06                80
 09/30/2018   01:28:41   (  -0.12,-135.57) (  -0.66,-137.93)  269.57                80
 10/01/2018   01:19:45   (  -0.13,-135.57) (  -0.05,-135.10)   53.53                80
 10/02/2018   01:08:11   (  -0.14,-135.57) (   0.62,-132.28)  376.37                80
 10/04/2018   13:26:42   (   0.10,-135.67) (   0.47,-137.31)  187.10                80
 10/05/2018   13:17:47   (   0.10,-135.67) (  -0.18,-134.49)  134.99                80