Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 10 20.  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)
 10/20/2021   06:55:09   (   0.35,-128.26) (  -0.08,-130.27)  228.24                80
 10/22/2021   06:40:18   (   0.35,-128.30) (   0.56,-127.31)  112.30                80
 10/22/2021   19:04:13   (  -0.35,-128.31) (   0.56,-132.46)  472.94                80
 10/24/2021   06:28:07   (   0.34,-128.33) (   1.21,-124.36)  452.25                80
 10/24/2021   18:49:22   (  -0.34,-128.34) (  -0.08,-129.51)  133.09                80
 10/26/2021   18:39:51   (  -0.33,-128.37) (  -0.73,-126.55)  206.16                80
 10/27/2021   07:01:15   (   0.33,-128.37) (  -0.39,-131.74)  383.31                80
 10/29/2021   06:49:04   (   0.32,-128.39) (   0.26,-128.79)   44.78                80
 10/31/2021   06:34:12   (   0.32,-128.41) (   0.86,-125.83)  293.48                80
 10/31/2021   18:58:08   (  -0.31,-128.41) (   0.20,-130.99)  292.48                80
 11/02/2021   18:43:16   (  -0.32,-128.42) (  -0.40,-128.02)   45.27                80