Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 9.  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)
 04/10/2021   18:32:55   (   0.11,-128.18) (  -0.59,-124.97)  364.96                80
 04/11/2021   06:54:19   (  -0.10,-128.08) (  -0.52,-130.17)  236.11                80
 04/13/2021   06:39:26   (  -0.10,-128.04) (   0.06,-127.20)   94.70                80
 04/13/2021   19:00:42   (   0.09,-128.10) (   0.99,-132.36)  484.64                80
 04/15/2021   06:27:14   (  -0.10,-127.98) (   0.70,-124.25)  424.82                80
 04/15/2021   18:48:30   (   0.09,-128.05) (   0.36,-129.41)  154.58                80
 04/17/2021   18:38:57   (   0.09,-127.99) (  -0.22,-126.45)  174.75                80
 04/18/2021   07:00:21   (  -0.08,-127.89) (  -0.88,-131.64)  425.84                80
 04/20/2021   06:48:09   (  -0.08,-127.83) (  -0.24,-128.69)   97.41                80
 04/22/2021   06:33:16   (  -0.08,-127.75) (   0.35,-125.72)  230.69                80
 04/22/2021   18:54:32   (   0.07,-127.80) (   0.71,-130.89)  350.32                80