Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/30/2018   07:18:25   (   0.06,-128.57) (  -0.55,-131.57)  341.14                80
 01/01/2019   07:06:13   (   0.06,-128.54) (   0.02,-128.60)    8.40                80
 01/03/2019   06:51:22   (   0.07,-128.51) (   0.66,-125.65)  324.78                80
 01/03/2019   19:12:36   (  -0.05,-128.44) (   0.48,-130.80)  268.35                80
 01/05/2019   19:03:06   (  -0.05,-128.41) (  -0.15,-127.84)   64.06                80
 01/07/2019   18:50:55   (  -0.05,-128.37) (  -0.78,-124.89)  396.05                80
 01/08/2019   07:12:18   (   0.04,-128.43) (  -0.34,-130.07)  188.29                80
 01/10/2019   06:57:27   (   0.04,-128.38) (   0.29,-127.12)  143.18                80
 01/10/2019   19:18:43   (  -0.03,-128.30) (   0.79,-132.28)  451.74                80
 01/12/2019   06:45:17   (   0.04,-128.34) (   0.91,-124.16)  474.30                80
 01/12/2019   19:06:32   (  -0.03,-128.26) (   0.17,-129.32)  120.59                80