Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/18/2018   06:51:22   (   0.12,-128.64) (   0.76,-125.68)  337.02                80
 12/18/2018   19:12:37   (  -0.11,-128.59) (   0.37,-130.83)  254.04                80
 12/20/2018   19:03:06   (  -0.11,-128.59) (  -0.27,-127.87)   81.49                80
 12/22/2018   18:50:55   (  -0.11,-128.57) (  -0.91,-124.92)  416.23                80
 12/23/2018   07:12:19   (   0.10,-128.62) (  -0.20,-130.11)  168.38                80
 12/25/2018   06:57:27   (   0.10,-128.60) (   0.38,-127.14)  165.30                80
 12/25/2018   19:18:42   (  -0.08,-128.53) (   0.74,-132.29)  428.14                80
 12/27/2018   06:45:16   (   0.09,-128.57) (   1.04,-124.19)  498.78                80
 12/27/2018   19:06:31   (  -0.08,-128.51) (   0.09,-129.34)   94.45                80
 12/29/2018   18:56:59   (  -0.08,-128.48) (  -0.51,-126.37)  239.07                80
 12/30/2018   07:18:23   (   0.06,-128.54) (  -0.60,-131.56)  344.06                80