Simultaneous Nadir Overpasses (SNOs) between GOES-16 and TERRA
TLE Epoch: 2017 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/22/2017   03:39:23   (   0.00, -75.17) (  -0.49, -77.49)  263.61                80
 12/24/2017   03:29:52   (   0.01, -75.16) (   0.13, -74.53)   71.55                80
 12/26/2017   03:17:41   (   0.01, -75.16) (   0.75, -71.57)  407.31                80
 12/26/2017   15:38:56   (  -0.01, -75.17) (   0.33, -76.73)  177.57                80
 12/28/2017   15:24:05   (  -0.01, -75.17) (  -0.30, -73.78)  158.55                80
 12/29/2017   03:45:29   (   0.01, -75.16) (  -0.81, -78.97)  433.61                80
 12/30/2017   15:11:55   (  -0.01, -75.18) (  -0.93, -70.82)  494.87                80
 12/31/2017   03:33:18   (   0.01, -75.16) (  -0.18, -76.01)   97.14                80
 01/02/2018   03:23:47   (   0.01, -75.16) (   0.46, -73.06)  239.64                80
 01/02/2018   15:45:03   (  -0.01, -75.19) (   0.62, -78.22)  344.44                80
 01/04/2018   15:30:11   (  -0.00, -75.20) (   0.04, -75.25)    7.59                80