Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2020 1 22.  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)
 01/23/2020   06:27:45   (   0.01,-128.42) (   0.91,-124.26)  473.08                80
 01/23/2020   18:51:39   (  -0.00,-128.40) (   0.21,-129.42)  115.41                80
 01/25/2020   18:36:47   (  -0.00,-128.38) (  -0.41,-126.46)  219.23                80
 01/26/2020   06:58:11   (  -0.01,-128.40) (  -0.70,-131.65)  369.64                80
 01/28/2020   06:45:59   (  -0.01,-128.38) (  -0.07,-128.69)   35.02                80
 01/30/2020   06:36:27   (  -0.02,-128.36) (   0.56,-125.73)  299.31                80
 01/30/2020   18:57:42   (   0.02,-128.34) (   0.57,-130.88)  289.18                80
 02/01/2020   18:42:50   (   0.02,-128.32) (  -0.06,-127.93)   44.37                80
 02/03/2020   18:30:38   (   0.01,-128.29) (  -0.69,-124.97)  377.19                80
 02/04/2020   06:52:02   (  -0.01,-128.29) (  -0.40,-130.16)  212.54                80