Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 9.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/09/2018   19:18:42   (  -0.14,-128.56) (   0.66,-132.30)  425.78                80
 12/11/2018   19:06:32   (  -0.14,-128.58) (   0.05,-129.35)   88.75                80
 12/13/2018   18:57:04   (  -0.14,-128.59) (  -0.63,-126.41)  247.73                80
 12/14/2018   07:18:29   (   0.12,-128.63) (  -0.49,-131.61)  337.35                80
 12/16/2018   07:03:41   (   0.12,-128.64) (   0.14,-128.66)    2.99                80
 12/18/2018   06:51:34   (   0.12,-128.64) (   0.78,-125.72)  332.21                80
 12/18/2018   19:12:50   (  -0.11,-128.59) (   0.35,-130.88)  260.04                80
 12/20/2018   19:03:23   (  -0.11,-128.58) (  -0.23,-127.93)   73.18                80
 12/22/2018   18:51:18   (  -0.11,-128.56) (  -0.88,-125.00)  405.14                80
 12/23/2018   07:12:44   (   0.10,-128.62) (  -0.22,-130.20)  179.62                80