Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 10.  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)
 04/10/2021   18:32:55   (   0.10,-128.18) (  -0.58,-124.97)  364.87                80
 04/11/2021   06:54:19   (  -0.10,-128.08) (  -0.53,-130.16)  236.14                80
 04/13/2021   06:39:27   (  -0.10,-128.03) (   0.10,-127.21)   94.59                80
 04/13/2021   19:00:42   (   0.09,-128.10) (   1.01,-132.36)  484.87                80
 04/15/2021   06:27:14   (  -0.10,-127.98) (   0.68,-124.24)  424.60                80
 04/15/2021   18:48:30   (   0.09,-128.04) (   0.37,-129.41)  154.87                80
 04/17/2021   18:38:58   (   0.09,-127.98) (  -0.27,-126.46)  174.36                80
 04/18/2021   07:00:20   (  -0.08,-127.89) (  -0.90,-131.63)  426.21                80
 04/20/2021   06:48:08   (  -0.08,-127.82) (  -0.25,-128.68)   97.84                80
 04/22/2021   06:33:16   (  -0.08,-127.75) (   0.33,-125.72)  230.17                80
 04/22/2021   18:54:31   (   0.07,-127.80) (   0.72,-130.88)  350.94                80