Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 28.  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   18:57:00   (  -0.07,-128.52) (  -0.54,-126.38)  244.04                80
 12/30/2018   07:18:24   (   0.06,-128.57) (  -0.57,-131.57)  340.82                80
 01/01/2019   07:06:12   (   0.06,-128.54) (   0.02,-128.60)    7.94                80
 01/03/2019   06:51:21   (   0.07,-128.52) (   0.68,-125.65)  325.82                80
 01/03/2019   19:12:36   (  -0.06,-128.45) (   0.45,-130.80)  267.30                80
 01/05/2019   19:03:04   (  -0.06,-128.42) (  -0.16,-127.84)   65.56                80
 01/07/2019   18:50:52   (  -0.05,-128.38) (  -0.77,-124.87)  398.11                80
 01/08/2019   07:12:17   (   0.04,-128.44) (  -0.28,-130.08)  185.93                80
 01/10/2019   06:57:25   (   0.04,-128.40) (   0.34,-127.12)  146.14                80
 01/10/2019   19:18:40   (  -0.03,-128.31) (   0.79,-132.27)  448.81                80