Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2017   07:16:03   (   0.05,-135.31) (   0.77,-131.84)  394.64                80
 12/27/2017   19:39:59   (  -0.04,-135.24) (   0.31,-137.00)  199.49                80
 12/29/2017   19:25:08   (  -0.05,-135.20) (  -0.32,-134.04)  132.03                80
 12/30/2017   07:49:11   (   0.03,-135.25) (  -0.80,-139.23)  452.11                80
 12/31/2017   19:15:37   (  -0.05,-135.15) (  -0.94,-131.08)  462.58                80
 01/01/2018   07:37:01   (   0.04,-135.20) (  -0.18,-136.27)  121.83                80
 01/03/2018   07:22:10   (   0.04,-135.14) (   0.45,-133.32)  207.88                80
 01/03/2018   19:46:04   (  -0.03,-135.05) (   0.69,-138.46)  387.46                80
 01/05/2018   19:31:13   (  -0.03,-134.99) (   0.06,-135.51)   58.07                80
 01/07/2018   19:21:42   (  -0.02,-134.93) (  -0.51,-132.54)  271.30                80
 01/08/2018   07:43:06   (   0.01,-134.98) (  -0.54,-137.74)  312.95                80