Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 23.  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   18:42:18   (   0.06,-127.72) (   0.12,-127.92)   23.01                80
 04/26/2021   18:32:46   (   0.06,-127.64) (  -0.53,-124.97)  304.77                80
 04/27/2021   06:54:09   (  -0.05,-127.55) (  -0.63,-130.15)  295.73                80
 04/29/2021   06:39:17   (  -0.05,-127.47) (   0.03,-127.20)   30.96                80
 05/01/2021   06:27:04   (  -0.05,-127.37) (   0.63,-124.24)  356.63                80
 05/01/2021   18:48:19   (   0.04,-127.41) (   0.48,-129.39)  225.64                80
 05/03/2021   18:38:46   (   0.04,-127.31) (  -0.13,-126.43)   99.95                80
 05/04/2021   07:00:10   (  -0.03,-127.23) (  -0.97,-131.62)  499.46                80
 05/05/2021   18:26:33   (   0.04,-127.22) (  -0.74,-123.47)  425.67                80
 05/06/2021   06:47:57   (  -0.03,-127.13) (  -0.35,-128.66)  173.87                80