Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2018   18:57:01   (  -0.08,-128.51) (  -0.56,-126.38)  243.09                80
 12/30/2018   07:18:24   (   0.06,-128.57) (  -0.56,-131.57)  341.17                80
 01/01/2019   07:06:12   (   0.07,-128.54) (   0.03,-128.60)    8.39                80
 01/03/2019   06:51:22   (   0.07,-128.51) (   0.67,-125.65)  324.81                80
 01/03/2019   19:12:36   (  -0.06,-128.43) (   0.46,-130.80)  269.13                80
 01/05/2019   19:03:05   (  -0.06,-128.40) (  -0.19,-127.85)   63.33                80
 01/07/2019   18:50:53   (  -0.06,-128.36) (  -0.77,-124.88)  395.46                80
 01/08/2019   07:12:18   (   0.04,-128.42) (  -0.29,-130.08)  187.93                80
 01/10/2019   06:57:26   (   0.04,-128.38) (   0.30,-127.12)  143.63                80
 01/10/2019   19:18:41   (  -0.03,-128.29) (   0.83,-132.27)  452.20                80