Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 6 25.  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)
 06/28/2018   01:11:19   (   0.23,-135.10) (  -0.18,-136.94)  209.18                80
 06/29/2018   01:02:25   (   0.23,-135.13) (   0.46,-134.12)  115.97                80
 06/30/2018   00:50:52   (   0.22,-135.16) (   1.11,-131.30)  441.02                80
 07/01/2018   13:21:06   (  -0.25,-135.20) (   0.66,-139.19)  454.55                80
 07/02/2018   13:09:33   (  -0.25,-135.23) (   0.01,-136.37)  129.85                80
 07/03/2018   13:00:39   (  -0.25,-135.26) (  -0.63,-133.55)  194.76                80
 07/06/2018   01:19:18   (   0.26,-135.32) (  -0.49,-138.61)  375.75                80
 07/07/2018   01:07:45   (   0.26,-135.34) (   0.16,-135.79)   51.55                80
 07/08/2018   00:58:51   (   0.26,-135.36) (   0.81,-132.98)  272.40                80