Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 9 20.  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)
 09/21/2018   01:32:26   (  -0.17,-135.46) (  -1.01,-139.13)  418.98                80
 09/22/2018   01:20:52   (  -0.18,-135.48) (  -0.35,-136.31)   94.41                80
 09/23/2018   01:11:56   (  -0.19,-135.49) (   0.26,-133.47)  230.08                80
 09/25/2018   13:30:26   (   0.15,-135.63) (   0.79,-138.51)  328.52                80
 09/26/2018   13:21:32   (   0.15,-135.64) (   0.14,-135.69)    5.46                80
 09/27/2018   13:09:56   (   0.16,-135.65) (  -0.46,-132.85)  319.02                80
 09/30/2018   01:28:41   (  -0.12,-135.57) (  -0.64,-137.94)  269.63                80
 10/01/2018   01:19:46   (  -0.13,-135.57) (  -0.03,-135.10)   53.43                80
 10/02/2018   01:08:11   (  -0.14,-135.57) (   0.64,-132.28)  376.34                80
 10/04/2018   13:26:42   (   0.10,-135.67) (   0.45,-137.31)  187.14                80