Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2015 12 19.  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)
 12/19/2015   23:12:42   (   0.09,-135.06) (   0.87,-131.70)  383.32                80
 12/22/2015   11:31:58   (  -0.11,-135.01) (   0.36,-136.94)  221.16                80
 12/23/2015   11:23:22   (  -0.10,-134.97) (  -0.30,-134.21)   87.64                80
 12/24/2015   11:12:04   (  -0.09,-134.93) (  -0.91,-131.46)  396.22                80
 12/26/2015   23:31:27   (   0.10,-134.78) (  -0.36,-136.72)  221.83                80
 12/27/2015   23:22:50   (   0.10,-134.74) (   0.27,-133.98)   86.76                80
 12/28/2015   23:11:32   (   0.09,-134.70) (   0.90,-131.24)  395.33                80
 12/31/2015   11:30:50   (  -0.11,-134.64) (   0.32,-136.49)  211.40                80
 01/01/2016   11:22:12   (  -0.10,-134.59) (  -0.30,-133.74)   96.60                80