Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2020 1 13.  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)
 01/14/2020   06:33:53   (   0.02,-128.43) (   0.59,-125.74)  305.97                80
 01/14/2020   18:57:47   (  -0.01,-128.41) (   0.53,-130.89)  282.28                80
 01/16/2020   18:42:56   (  -0.01,-128.42) (  -0.13,-127.94)   54.62                80
 01/18/2020   18:30:45   (  -0.01,-128.42) (  -0.74,-124.98)  390.91                80
 01/19/2020   06:54:48   (   0.01,-128.44) (  -0.37,-130.17)  196.96                80
 01/21/2020   06:39:57   (   0.01,-128.44) (   0.30,-127.23)  138.72                80
 01/21/2020   19:03:52   (  -0.01,-128.42) (   0.83,-132.38)  450.08                80
 01/23/2020   06:27:45   (   0.02,-128.43) (   0.91,-124.27)  473.92                80
 01/23/2020   18:51:40   (  -0.01,-128.41) (   0.22,-129.42)  114.94                80
 01/25/2020   18:36:48   (  -0.01,-128.40) (  -0.39,-126.46)  220.13                80
 01/26/2020   07:00:52   (   0.00,-128.42) (  -0.71,-131.65)  368.05                80