Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/14/2018   07:18:25   (   0.12,-128.63) (  -0.49,-131.59)  335.41                80
 12/16/2018   07:03:34   (   0.12,-128.64) (   0.13,-128.63)    1.05                80
 12/18/2018   06:51:23   (   0.12,-128.64) (   0.74,-125.67)  336.93                80
 12/18/2018   19:12:39   (  -0.11,-128.59) (   0.34,-130.83)  254.72                80
 12/20/2018   19:03:08   (  -0.11,-128.58) (  -0.27,-127.87)   80.49                80
 12/22/2018   18:50:57   (  -0.11,-128.56) (  -0.88,-124.91)  414.81                80
 12/23/2018   07:12:20   (   0.10,-128.62) (  -0.24,-130.10)  169.45                80
 12/25/2018   06:57:31   (   0.10,-128.59) (   0.43,-127.16)  163.80                80
 12/25/2018   19:18:45   (  -0.08,-128.52) (   0.72,-132.30)  430.22                80
 12/27/2018   06:45:20   (   0.09,-128.56) (   1.03,-124.20)  496.77                80
 12/27/2018   19:06:34   (  -0.08,-128.49) (   0.11,-129.34)   97.08                80