Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 7 11.  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) (   0.60,-125.76)  249.82                80
 07/11/2021   18:54:51   (  -0.09,-127.90) (   0.52,-130.90)  341.47                80
 07/13/2021   18:45:19   (  -0.10,-127.82) (  -0.06,-127.94)   13.10                80
 07/15/2021   18:33:08   (  -0.11,-127.75) (  -0.71,-124.98)  315.15                80
 07/16/2021   06:54:32   (   0.09,-127.77) (  -0.42,-130.17)  272.89                80
 07/18/2021   06:39:40   (   0.10,-127.68) (   0.18,-127.20)   54.56                80
 07/20/2021   06:27:29   (   0.10,-127.59) (   0.83,-124.24)  381.20                80
 07/20/2021   18:48:44   (  -0.08,-127.53) (   0.29,-129.39)  211.70                80
 07/22/2021   18:39:12   (  -0.08,-127.43) (  -0.30,-126.43)  114.25                80
 07/23/2021   07:00:36   (   0.06,-127.45) (  -0.81,-131.61)  473.11                80
 07/24/2021   18:27:00   (  -0.09,-127.33) (  -0.90,-123.46)  439.85                80