Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2018   19:06:31   (  -0.08,-128.54) (   0.10,-129.33)   90.14                80
 12/29/2018   18:57:00   (  -0.07,-128.52) (  -0.55,-126.38)  244.07                80
 12/30/2018   07:18:24   (   0.06,-128.57) (  -0.57,-131.57)  340.79                80
 01/01/2019   07:06:12   (   0.06,-128.54) (   0.03,-128.60)    7.47                80
 01/03/2019   06:51:21   (   0.07,-128.52) (   0.70,-125.65)  325.92                80
 01/03/2019   19:12:36   (  -0.06,-128.45) (   0.43,-130.80)  267.21                80
 01/05/2019   19:03:04   (  -0.06,-128.42) (  -0.18,-127.84)   65.66                80
 01/07/2019   18:50:52   (  -0.05,-128.38) (  -0.80,-124.88)  398.28                80
 01/08/2019   07:12:16   (   0.04,-128.44) (  -0.31,-130.07)  185.70                80