Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/31/2017   19:15:36   (  -0.04,-135.15) (  -0.89,-131.08)  463.13                80
 01/01/2018   07:37:00   (   0.03,-135.20) (  -0.22,-136.27)  121.98                80
 01/03/2018   07:22:09   (   0.04,-135.14) (   0.41,-133.31)  208.07                80
 01/03/2018   19:46:05   (  -0.02,-135.07) (   0.67,-138.47)  386.46                80
 01/05/2018   19:33:53   (  -0.02,-135.01) (   0.10,-135.50)   56.65                80
 01/07/2018   19:21:42   (  -0.02,-134.95) (  -0.54,-132.55)  273.02                80
 01/08/2018   07:43:06   (   0.01,-135.00) (  -0.56,-137.74)  311.80                80
 01/10/2018   07:28:14   (   0.01,-134.93) (   0.02,-134.77)   17.58                80
 01/12/2018   07:16:03   (   0.02,-134.86) (   0.67,-131.82)  345.88                80
 01/12/2018   19:39:57   (  -0.01,-134.78) (   0.48,-136.97)  249.56                80