Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2017   07:22:08   (   0.09,-135.43) (   0.51,-133.33)  238.42                80
 12/18/2017   19:46:04   (  -0.07,-135.36) (   0.61,-138.48)  355.25                80
 12/20/2017   19:33:56   (  -0.07,-135.34) (  -0.02,-135.54)   22.45                80
 12/22/2017   19:19:10   (  -0.07,-135.32) (  -0.68,-132.61)  309.33                80
 12/23/2017   07:43:15   (   0.06,-135.38) (  -0.46,-137.80)  274.81                80
 12/25/2017   07:28:30   (   0.06,-135.35) (   0.16,-134.86)   55.37                80
 12/27/2017   07:16:26   (   0.06,-135.32) (   0.76,-131.93)  384.33                80
 12/27/2017   19:40:24   (  -0.04,-135.24) (   0.33,-137.10)  211.31                80
 12/29/2017   19:25:42   (  -0.05,-135.19) (  -0.28,-134.18)  115.86                80
 12/30/2017   07:49:48   (   0.04,-135.25) (  -0.87,-139.37)  469.04                80