Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 11 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)
 11/21/2017   07:43:12   (   0.17,-135.09) (  -0.42,-137.82)  310.76                80
 11/23/2017   07:28:21   (   0.17,-135.15) (   0.25,-134.87)   32.01                80
 11/25/2017   07:16:10   (   0.17,-135.20) (   0.87,-131.91)  374.17                80
 11/25/2017   19:37:24   (  -0.16,-135.15) (   0.25,-137.06)  217.36                80
 11/27/2017   19:27:52   (  -0.15,-135.19) (  -0.38,-134.10)  124.42                80
 11/28/2017   07:49:16   (   0.14,-135.28) (  -0.72,-139.29)  456.50                80
 11/29/2017   19:15:40   (  -0.15,-135.23) (  -1.01,-131.14)  465.57                80
 11/30/2017   07:37:04   (   0.14,-135.31) (  -0.09,-136.33)  115.69                80
 12/02/2017   07:22:12   (   0.14,-135.34) (   0.56,-133.37)  224.28                80
 12/02/2017   19:46:07   (  -0.13,-135.27) (   0.57,-138.52)  368.97                80
 12/04/2017   19:31:15   (  -0.13,-135.30) (  -0.08,-135.56)   29.87                80