Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 12/25/2018   06:57:28   (   0.10,-128.61) (   0.40,-127.14)  167.01                80
 12/25/2018   19:18:43   (  -0.08,-128.56) (   0.73,-132.29)  424.83                80
 12/27/2018   19:06:32   (  -0.08,-128.54) (   0.09,-129.33)   90.49                80
 12/29/2018   18:57:01   (  -0.08,-128.52) (  -0.55,-126.38)  243.65                80
 12/30/2018   07:18:25   (   0.06,-128.57) (  -0.56,-131.57)  340.70                80
 01/01/2019   07:06:14   (   0.06,-128.55) (   0.08,-128.62)    7.93                80
 01/03/2019   06:51:22   (   0.07,-128.52) (   0.67,-125.65)  325.79                80
 01/03/2019   19:12:36   (  -0.06,-128.45) (   0.47,-130.80)  267.95                80
 01/05/2019   19:03:05   (  -0.06,-128.41) (  -0.18,-127.84)   64.77                80