Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 6 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)
 06/23/2018   13:13:05   (  -0.20,-134.94) (   0.38,-137.50)  292.33                80
 06/24/2018   13:04:12   (  -0.20,-134.98) (  -0.25,-134.68)   33.61                80
 06/25/2018   12:52:39   (  -0.20,-135.02) (  -0.95,-131.87)  359.33                80
 06/28/2018   01:11:19   (   0.23,-135.11) (  -0.18,-136.94)  208.23                80
 06/29/2018   01:02:25   (   0.23,-135.14) (   0.47,-134.12)  117.14                80
 06/30/2018   00:50:52   (   0.22,-135.18) (   1.12,-131.30)  442.39                80
 07/01/2018   13:21:06   (  -0.25,-135.22) (   0.65,-139.19)  453.19                80
 07/02/2018   13:09:33   (  -0.25,-135.25) (   0.00,-136.37)  128.26                80
 07/03/2018   13:00:39   (  -0.25,-135.28) (  -0.64,-133.55)  196.56                80