Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2015 12 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)
 12/22/2015   11:31:59   (  -0.11,-135.00) (   0.33,-136.95)  221.71                80
 12/23/2015   11:23:21   (  -0.10,-134.96) (  -0.27,-134.20)   86.98                80
 12/24/2015   11:12:04   (  -0.09,-134.92) (  -0.87,-131.45)  395.54                80
 12/26/2015   23:31:28   (   0.10,-134.78) (  -0.33,-136.73)  222.68                80
 12/27/2015   23:22:50   (   0.10,-134.73) (   0.29,-133.99)   85.87                80
 12/28/2015   23:11:32   (   0.09,-134.69) (   0.87,-131.23)  394.35                80
 12/31/2015   11:30:49   (  -0.11,-134.63) (   0.35,-136.48)  212.57                80
 01/01/2016   11:22:12   (  -0.10,-134.58) (  -0.27,-133.74)   95.44                80
 01/02/2016   11:10:54   (  -0.10,-134.53) (  -0.89,-130.99)  403.22                80