Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2020 1 21.  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)
 01/21/2020   06:39:56   (   0.01,-128.43) (   0.24,-127.21)  138.25                80
 01/21/2020   19:03:51   (  -0.00,-128.41) (   0.82,-132.38)  450.13                80
 01/23/2020   06:27:45   (   0.01,-128.42) (   0.92,-124.27)  473.16                80
 01/23/2020   18:51:40   (  -0.00,-128.40) (   0.20,-129.42)  115.31                80
 01/25/2020   18:36:48   (  -0.00,-128.39) (  -0.42,-126.46)  219.45                80
 01/26/2020   06:58:11   (  -0.00,-128.40) (  -0.68,-131.65)  369.40                80
 01/28/2020   06:45:59   (  -0.01,-128.38) (  -0.06,-128.69)   34.73                80
 01/30/2020   06:36:27   (  -0.01,-128.37) (   0.57,-125.74)  299.78                80
 01/30/2020   18:57:42   (   0.02,-128.35) (   0.55,-130.89)  288.70                80
 02/01/2020   18:42:50   (   0.02,-128.32) (  -0.08,-127.93)   44.98                80
 02/03/2020   18:30:38   (   0.01,-128.29) (  -0.71,-124.97)  377.90                80