Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 10 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 10/20/2017   07:43:16   (   0.27,-135.19) (  -0.31,-137.88)  307.14                80
 10/22/2017   07:28:24   (   0.27,-135.13) (   0.34,-134.93)   23.75                80
 10/24/2017   07:16:11   (   0.27,-135.07) (   0.92,-131.96)  353.78                80
 10/24/2017   19:37:26   (  -0.26,-135.06) (   0.20,-137.11)  233.52                80
 10/26/2017   19:27:54   (  -0.26,-135.00) (  -0.43,-134.15)   95.96                80
 10/27/2017   07:49:18   (   0.25,-134.99) (  -0.67,-139.34)  495.66                80
 10/28/2017   19:15:42   (  -0.25,-134.93) (  -1.05,-131.19)  424.81                80
 10/29/2017   07:37:06   (   0.25,-134.91) (  -0.05,-136.39)  167.15                80
 10/31/2017   07:22:14   (   0.25,-134.84) (   0.56,-133.43)  160.68                80
 10/31/2017   19:43:28   (  -0.24,-134.81) (   0.57,-138.57)  428.85                80
 11/02/2017   07:10:02   (   0.25,-134.75) (   1.17,-130.46)  487.84                80
 11/02/2017   19:31:16   (  -0.24,-134.72) (  -0.03,-135.61)  101.71                80