Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2015 12 21.  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)
 12/22/2015   11:31:58   (  -0.11,-135.00) (   0.34,-136.94)  221.78                80
 12/23/2015   11:23:21   (  -0.10,-134.96) (  -0.26,-134.20)   86.95                80
 12/24/2015   11:12:03   (  -0.09,-134.92) (  -0.87,-131.45)  395.52                80
 12/26/2015   23:31:27   (   0.10,-134.78) (  -0.34,-136.73)  222.46                80
 12/27/2015   23:22:50   (   0.10,-134.74) (   0.29,-133.99)   86.12                80
 12/28/2015   23:11:31   (   0.10,-134.69) (   0.87,-131.23)  394.64                80
 12/31/2015   11:30:49   (  -0.11,-134.63) (   0.34,-136.48)  212.32                80
 01/01/2016   11:22:12   (  -0.10,-134.58) (  -0.28,-133.74)   95.68                80
 01/02/2016   11:10:54   (  -0.10,-134.53) (  -0.91,-130.99)  403.53                80