Simultaneous Nadir Overpasses (SNOs) between GOES-15 and TERRA
TLE Epoch: 2018 12 25.  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   (   0.09,-128.61) (   0.42,-127.14)  166.82                80
 12/25/2018   19:18:43   (  -0.08,-128.56) (   0.72,-132.29)  424.82                80
 12/27/2018   19:06:32   (  -0.08,-128.54) (   0.08,-129.34)   90.47                80
 12/29/2018   18:57:00   (  -0.08,-128.52) (  -0.51,-126.37)  243.75                80
 12/30/2018   07:18:24   (   0.06,-128.57) (  -0.61,-131.56)  340.81                80
 01/01/2019   07:06:13   (   0.06,-128.55) (   0.04,-128.61)    7.29                80
 01/03/2019   06:51:22   (   0.07,-128.52) (   0.69,-125.66)  325.81                80
 01/03/2019   19:12:37   (  -0.06,-128.45) (   0.44,-130.80)  267.69                80
 01/05/2019   19:03:05   (  -0.06,-128.42) (  -0.15,-127.84)   65.16                80
 01/07/2019   18:50:54   (  -0.05,-128.38) (  -0.80,-124.89)  397.59                80