Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 8 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 08/21/2017   07:19:06   (   0.18,-135.00) (   0.84,-131.96)  344.93                80
 08/21/2017   19:37:42   (  -0.21,-135.09) (   0.24,-137.13)  232.03                80
 08/23/2017   19:28:11   (  -0.21,-135.11) (  -0.39,-134.17)  105.78                80
 08/24/2017   07:46:56   (   0.23,-135.03) (  -0.66,-139.38)  493.69                80
 08/25/2017   19:16:00   (  -0.20,-135.12) (  -1.03,-131.22)  443.47                80
 08/26/2017   07:34:44   (   0.23,-135.04) (  -0.08,-136.41)  156.24                80
 08/28/2017   07:25:13   (   0.22,-135.05) (   0.58,-133.46)  180.79                80
 08/28/2017   19:43:49   (  -0.25,-135.13) (   0.50,-138.62)  397.74                80
 08/30/2017   19:31:37   (  -0.24,-135.13) (  -0.11,-135.66)   61.25                80
 09/01/2017   19:22:05   (  -0.23,-135.12) (  -0.72,-132.70)  274.59                80
 09/02/2017   07:40:48   (   0.25,-135.05) (  -0.38,-137.90)  324.10                80