Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 8 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/01/2018   19:35:14   (   0.05,-135.47) (   0.11,-135.80)   38.04                80
 08/03/2018   19:20:22   (   0.04,-135.44) (  -0.51,-132.84)  295.00                80
 08/04/2018   07:44:25   (  -0.08,-135.38) (  -0.66,-138.02)  300.24                80
 08/06/2018   07:29:33   (  -0.07,-135.34) (  -0.03,-135.06)   31.87                80
 08/08/2018   07:17:21   (  -0.07,-135.30) (   0.59,-132.10)  362.93                80
 08/08/2018   19:41:16   (   0.11,-135.33) (   0.54,-137.25)  219.06                80
 08/10/2018   19:26:24   (   0.09,-135.28) (  -0.09,-134.29)  111.20                80
 08/11/2018   07:50:26   (  -0.13,-135.22) (  -1.06,-139.47)  484.55                80
 08/12/2018   19:14:12   (   0.08,-135.22) (  -0.72,-131.34)  441.13                80
 08/13/2018   07:38:14   (  -0.13,-135.16) (  -0.43,-136.51)  154.66                80