Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 8 29.  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)
 08/30/2021   18:45:42   (  -0.27,-128.24) (  -0.33,-128.00)   27.02                80
 09/01/2021   18:33:32   (  -0.26,-128.23) (  -0.93,-125.04)  362.27                80
 09/02/2021   06:52:16   (   0.29,-128.27) (  -0.14,-130.24)  223.83                80
 09/04/2021   06:42:46   (   0.29,-128.26) (   0.52,-127.29)  110.58                80
 09/04/2021   19:01:22   (  -0.32,-128.20) (   0.56,-132.45)  482.60                80
 09/06/2021   06:30:35   (   0.29,-128.24) (   1.12,-124.33)  444.53                80
 09/06/2021   18:49:11   (  -0.31,-128.18) (  -0.04,-129.49)  148.61                80
 09/08/2021   18:39:40   (  -0.31,-128.16) (  -0.64,-126.52)  184.93                80
 09/09/2021   06:58:25   (   0.34,-128.20) (  -0.43,-131.72)  400.85                80
 09/11/2021   06:46:14   (   0.33,-128.17) (   0.17,-128.76)   68.03                80