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

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/13/2018   18:57:00   (  -0.14,-128.59) (  -0.59,-126.39)  249.69                80
 12/14/2018   07:18:24   (   0.12,-128.63) (  -0.53,-131.58)  335.02                80
 12/16/2018   07:03:33   (   0.12,-128.64) (   0.12,-128.62)    1.76                80
 12/18/2018   06:51:22   (   0.12,-128.64) (   0.77,-125.67)  337.92                80
 12/18/2018   19:12:37   (  -0.11,-128.58) (   0.35,-130.82)  253.77                80
 12/20/2018   19:03:05   (  -0.11,-128.58) (  -0.25,-127.86)   81.84                80
 12/22/2018   18:50:53   (  -0.11,-128.56) (  -0.87,-124.89)  416.68                80
 12/23/2018   07:12:16   (   0.10,-128.62) (  -0.24,-130.08)  167.29                80
 12/25/2018   06:57:25   (   0.10,-128.59) (   0.38,-127.12)  166.58                80
 12/25/2018   19:18:39   (  -0.08,-128.52) (   0.74,-132.27)  427.42                80