Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2019 5 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 05/01/2019   06:47:58   (   0.09,-128.07) (  -0.07,-128.72)   74.95                80
 05/03/2019   06:33:09   (   0.09,-128.12) (   0.59,-125.78)  265.92                80
 05/03/2019   18:54:25   (  -0.09,-128.16) (   0.52,-130.94)  316.27                80
 05/05/2019   18:44:57   (  -0.10,-128.21) (  -0.15,-128.00)   23.44                80
 05/07/2019   18:32:49   (  -0.10,-128.24) (  -0.78,-125.06)  361.92                80
 05/08/2019   06:54:14   (   0.10,-128.22) (  -0.33,-130.25)  230.93                80
 05/10/2019   06:39:27   (   0.11,-128.25) (   0.32,-127.32)  106.16                80
 05/10/2019   19:00:44   (  -0.11,-128.28) (   0.77,-132.48)  477.24                80
 05/12/2019   06:27:20   (   0.11,-128.27) (   0.93,-124.38)  442.52                80
 05/12/2019   18:48:37   (  -0.11,-128.31) (   0.16,-129.54)  140.99                80
 05/14/2019   18:39:11   (  -0.12,-128.33) (  -0.46,-126.61)  194.91                80