Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 8 16.  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)
 08/17/2017   12:29:15   (   0.36,-135.03) (   0.51,-135.74)   81.29                80
 08/18/2017   12:15:06   (   0.36,-135.04) (  -0.12,-132.95)  238.62                80
 08/21/2017   00:36:48   (  -0.34,-135.01) (  -1.08,-138.11)  354.05                80
 08/22/2017   00:25:21   (  -0.34,-135.02) (  -0.39,-135.32)   33.93                80
 08/23/2017   00:16:32   (  -0.34,-135.03) (   0.24,-132.53)  286.22                80
 08/25/2017   12:37:55   (   0.32,-135.12) (   0.92,-137.61)  285.67                80
 08/26/2017   12:23:47   (   0.33,-135.12) (   0.28,-134.82)   33.94                80
 08/27/2017   12:12:18   (   0.33,-135.12) (  -0.36,-132.02)  353.28                80
 08/30/2017   00:34:00   (  -0.31,-135.06) (  -0.80,-137.19)  242.77                80