Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NOAA-19
TLE Epoch: 2017 7 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)
 07/21/2017   12:37:45   (  -0.27,-135.08) (   0.54,-138.65)  406.63                80
 07/22/2017   12:26:17   (  -0.27,-135.05) (  -0.07,-135.85)   91.55                80
 07/23/2017   12:12:09   (  -0.27,-135.02) (  -0.74,-133.06)  223.51                80
 07/26/2017   00:33:48   (   0.29,-134.94) (  -0.45,-138.21)  373.34                80
 07/27/2017   00:22:19   (   0.29,-134.91) (   0.14,-135.41)   58.38                80
 07/28/2017   00:13:32   (   0.29,-134.87) (   0.80,-132.62)  256.61                80
 07/30/2017   12:34:59   (  -0.30,-134.78) (   0.36,-137.73)  336.20                80
 07/31/2017   12:23:30   (  -0.30,-134.74) (  -0.26,-134.93)   21.75                80
 08/01/2017   12:09:22   (  -0.30,-134.70) (  -0.88,-132.13)  292.52                80