Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 24.  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)
 04/24/2021   18:42:19   (   0.06,-127.73) (   0.09,-127.93)   22.69                80
 04/26/2021   18:32:46   (   0.06,-127.65) (  -0.51,-124.96)  305.09                80
 04/27/2021   06:54:10   (  -0.05,-127.56) (  -0.59,-130.16)  295.59                80
 04/29/2021   06:39:17   (  -0.05,-127.47) (   0.01,-127.19)   31.05                80
 05/01/2021   06:27:04   (  -0.05,-127.37) (   0.61,-124.23)  356.99                80
 05/01/2021   18:48:20   (   0.04,-127.42) (   0.44,-129.40)  225.02                80
 05/03/2021   18:38:47   (   0.04,-127.32) (  -0.16,-126.44)  100.69                80
 05/04/2021   07:00:09   (  -0.03,-127.24) (  -0.99,-131.62)  498.93                80
 05/05/2021   18:26:34   (   0.04,-127.22) (  -0.77,-123.48)  426.54                80
 05/06/2021   06:47:56   (  -0.03,-127.14) (  -0.38,-128.66)  173.24                80