Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 8.  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   06:57:28   (   0.16,-128.60) (   0.48,-127.16)  163.64                80
 12/09/2018   19:18:43   (  -0.14,-128.56) (   0.67,-132.31)  426.32                80
 12/11/2018   06:45:20   (   0.16,-128.61) (   1.10,-124.22)  499.74                80
 12/11/2018   19:06:36   (  -0.14,-128.58) (   0.03,-129.37)   90.25                80
 12/13/2018   18:57:11   (  -0.14,-128.59) (  -0.62,-126.44)  244.61                80
 12/14/2018   07:18:37   (   0.12,-128.64) (  -0.51,-131.64)  340.94                80
 12/16/2018   07:06:34   (   0.12,-128.64) (   0.12,-128.71)    8.00                80
 12/18/2018   06:51:53   (   0.12,-128.64) (   0.75,-125.80)  323.66                80
 12/18/2018   19:13:10   (  -0.11,-128.59) (   0.42,-130.95)  269.38                80
 12/20/2018   19:03:52   (  -0.11,-128.58) (  -0.24,-128.06)   60.45                80