Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 9 1.  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)
 09/02/2018   12:57:56   (   0.33,-134.96) (  -0.64,-130.75)  479.61                80
 09/04/2018   01:28:17   (  -0.29,-134.95) (  -1.14,-138.67)  424.80                80
 09/05/2018   01:16:43   (  -0.29,-134.99) (  -0.50,-135.85)   98.12                80
 09/06/2018   01:07:48   (  -0.30,-135.03) (   0.14,-133.02)  228.34                80
 09/08/2018   13:26:17   (   0.26,-135.19) (   0.92,-138.05)  326.23                80
 09/09/2018   13:14:43   (   0.26,-135.23) (   0.27,-135.23)    0.54                80
 09/10/2018   13:05:48   (   0.27,-135.26) (  -0.38,-132.40)  325.90                80
 09/13/2018   01:24:35   (  -0.23,-135.26) (  -0.75,-137.50)  254.98                80
 09/14/2018   01:15:40   (  -0.24,-135.30) (  -0.10,-134.67)   70.97                80
 09/15/2018   01:04:06   (  -0.25,-135.33) (   0.56,-131.85)  396.90                80