Simultaneous Nadir Overpasses (SNOs) between GOES-16 and TERRA
TLE Epoch: 2017 12 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/28/2017   15:24:05   (   0.00, -75.22) (  -0.29, -73.78)  163.76                80
 12/29/2017   03:45:30   (   0.00, -75.20) (  -0.77, -78.98)  428.41                80
 12/31/2017   03:33:19   (   0.01, -75.22) (  -0.15, -76.02)   90.46                80
 01/02/2018   03:23:48   (   0.00, -75.24) (   0.48, -73.06)  248.02                80
 01/02/2018   15:45:04   (  -0.00, -75.27) (   0.60, -78.23)  335.34                80
 01/04/2018   15:30:12   (   0.01, -75.30) (   0.03, -75.26)    4.79                80
 01/06/2018   15:18:01   (   0.02, -75.33) (  -0.60, -72.30)  344.14                80
 01/07/2018   03:39:25   (  -0.02, -75.32) (  -0.51, -77.49)  247.63                80
 01/09/2018   03:29:54   (  -0.03, -75.36) (   0.12, -74.53)   93.51                80
 01/09/2018   15:51:10   (   0.03, -75.40) (   0.96, -79.69)  488.83                80