Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 7 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)
 07/11/2021   06:33:36   (   0.10,-127.95) (   0.59,-125.75)  249.74                80
 07/11/2021   18:54:51   (  -0.09,-127.90) (   0.54,-130.90)  341.58                80
 07/13/2021   18:45:19   (  -0.10,-127.82) (  -0.05,-127.93)   13.59                80
 07/15/2021   18:33:08   (  -0.11,-127.75) (  -0.69,-124.98)  314.87                80
 07/16/2021   06:54:32   (   0.09,-127.76) (  -0.43,-130.16)  273.17                80
 07/18/2021   06:39:41   (   0.10,-127.68) (   0.22,-127.21)   54.20                80
 07/20/2021   06:27:29   (   0.10,-127.59) (   0.81,-124.24)  380.75                80
 07/20/2021   18:48:44   (  -0.08,-127.52) (   0.31,-129.39)  212.18                80
 07/22/2021   18:39:12   (  -0.08,-127.43) (  -0.29,-126.42)  113.68                80
 07/23/2021   07:00:36   (   0.07,-127.45) (  -0.83,-131.61)  473.67                80