Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 10 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)
 10/22/2017   07:28:24   (   0.27,-135.13) (   0.29,-134.92)   23.44                80
 10/24/2017   07:16:13   (   0.27,-135.07) (   0.94,-131.97)  352.95                80
 10/24/2017   19:37:28   (  -0.26,-135.06) (   0.20,-137.12)  234.57                80
 10/26/2017   19:27:58   (  -0.26,-135.00) (  -0.46,-134.17)   94.27                80
 10/27/2017   07:49:21   (   0.25,-134.98) (  -0.66,-139.36)  497.53                80
 10/28/2017   19:15:47   (  -0.25,-134.93) (  -1.04,-131.21)  422.20                80
 10/29/2017   07:37:11   (   0.25,-134.91) (  -0.09,-136.40)  169.94                80
 10/31/2017   07:22:22   (   0.25,-134.83) (   0.57,-133.46)  156.85                80
 10/31/2017   19:43:37   (  -0.24,-134.80) (   0.55,-138.61)  433.09                80
 11/02/2017   07:10:12   (   0.25,-134.75) (   1.14,-130.50)  482.75                80
 11/02/2017   19:31:27   (  -0.24,-134.72) (  -0.01,-135.65)  107.24                80