Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2018 4 22.  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)
 04/23/2018   13:14:22   (   0.03,-135.42) (   1.07,-139.78)  499.15                80
 04/24/2018   13:02:49   (   0.04,-135.43) (   0.42,-136.97)  176.40                80
 04/25/2018   12:53:57   (   0.04,-135.44) (  -0.23,-134.15)  146.37                80
 04/26/2018   12:42:25   (   0.05,-135.45) (  -0.93,-131.35)  469.03                80
 04/28/2018   01:12:48   (  -0.03,-135.48) (  -0.91,-139.27)  432.48                80
 04/29/2018   01:01:16   (  -0.03,-135.49) (  -0.26,-136.46)  110.09                80
 04/30/2018   00:52:24   (  -0.03,-135.50) (   0.38,-133.64)  212.16                80
 05/02/2018   13:10:56   (   0.01,-135.51) (   0.73,-138.68)  361.95                80
 05/03/2018   12:59:24   (   0.02,-135.51) (   0.08,-135.87)   40.24                80
 05/04/2018   12:50:31   (   0.02,-135.51) (  -0.58,-133.05)  281.47                80