Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 10 18.  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)
 10/19/2021   18:33:45   (  -0.35,-128.25) (  -1.02,-125.07)  360.90                80
 10/20/2021   06:55:09   (   0.35,-128.26) (  -0.11,-130.26)  227.90                80
 10/22/2021   06:40:18   (   0.35,-128.30) (   0.53,-127.31)  112.88                80
 10/22/2021   19:01:33   (  -0.35,-128.31) (   0.53,-132.47)  472.82                80
 10/24/2021   06:28:07   (   0.34,-128.34) (   1.18,-124.35)  452.98                80
 10/24/2021   18:49:22   (  -0.34,-128.34) (  -0.11,-129.51)  132.81                80
 10/26/2021   18:39:51   (  -0.33,-128.37) (  -0.70,-126.55)  206.64                80
 10/27/2021   07:01:15   (   0.33,-128.38) (  -0.36,-131.75)  382.31                80
 10/29/2021   06:49:03   (   0.32,-128.40) (   0.23,-128.78)   43.54                80
 10/31/2021   06:34:12   (   0.32,-128.42) (   0.89,-125.83)  294.85                80
 10/31/2021   18:58:07   (  -0.31,-128.42) (   0.24,-130.98)  291.55                80