Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 10 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)
 10/22/2021   06:40:18   (   0.35,-128.30) (   0.58,-127.32)  112.18                80
 10/22/2021   19:04:13   (  -0.35,-128.31) (   0.55,-132.47)  472.87                80
 10/24/2021   06:28:06   (   0.34,-128.33) (   1.16,-124.35)  452.05                80
 10/24/2021   18:49:22   (  -0.34,-128.34) (  -0.10,-129.51)  133.09                80
 10/26/2021   18:39:51   (  -0.33,-128.37) (  -0.75,-126.56)  206.12                80
 10/27/2021   07:01:15   (   0.33,-128.37) (  -0.37,-131.75)  383.62                80
 10/29/2021   06:49:03   (   0.32,-128.39) (   0.22,-128.78)   45.15                80
 10/31/2021   06:34:12   (   0.32,-128.41) (   0.88,-125.83)  293.05                80
 10/31/2021   18:58:07   (  -0.31,-128.41) (   0.25,-130.98)  292.67                80
 11/02/2021   18:43:16   (  -0.32,-128.42) (  -0.42,-128.03)   45.05                80