Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2017 12 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2017   19:25:08   (  -0.04,-135.20) (  -0.30,-134.04)  132.40                80
 12/30/2017   07:49:11   (   0.03,-135.25) (  -0.81,-139.23)  452.00                80
 12/31/2017   19:15:37   (  -0.05,-135.15) (  -0.93,-131.08)  463.24                80
 01/01/2018   07:37:00   (   0.04,-135.20) (  -0.18,-136.27)  121.45                80
 01/03/2018   07:22:09   (   0.04,-135.14) (   0.46,-133.32)  208.55                80
 01/03/2018   19:46:04   (  -0.03,-135.06) (   0.68,-138.46)  386.39                80
 01/05/2018   19:33:52   (  -0.02,-135.00) (   0.10,-135.50)   56.64                80
 01/07/2018   19:21:41   (  -0.02,-134.94) (  -0.55,-132.54)  273.03                80
 01/08/2018   07:43:05   (   0.01,-134.99) (  -0.56,-137.73)  311.41                80
 01/10/2018   07:28:13   (   0.02,-134.93) (   0.03,-134.77)   17.81                80