Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 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)
 04/18/2021   07:00:21   (  -0.07,-127.89) (  -0.85,-131.64)  426.77                80
 04/20/2021   06:48:08   (  -0.07,-127.82) (  -0.26,-128.68)   98.55                80
 04/22/2021   06:33:16   (  -0.07,-127.74) (   0.38,-125.73)  229.33                80
 04/22/2021   18:54:31   (   0.06,-127.79) (   0.73,-130.88)  352.03                80
 04/24/2021   18:42:18   (   0.06,-127.71) (   0.14,-127.92)   24.55                80
 04/26/2021   18:32:46   (   0.07,-127.63) (  -0.52,-124.97)  302.77                80
 04/27/2021   06:54:10   (  -0.06,-127.54) (  -0.58,-130.16)  297.07                80
 04/29/2021   06:39:17   (  -0.06,-127.45) (   0.02,-127.20)   29.07                80
 05/01/2021   06:27:04   (  -0.06,-127.35) (   0.62,-124.24)  354.29                80
 05/01/2021   18:48:19   (   0.05,-127.38) (   0.50,-129.39)  228.89                80