Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 11.  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)
 04/11/2021   06:54:18   (  -0.10,-128.08) (  -0.55,-130.16)  236.15                80
 04/13/2021   06:39:26   (  -0.10,-128.03) (   0.09,-127.20)   94.47                80
 04/13/2021   19:00:41   (   0.09,-128.10) (   1.03,-132.36)  485.05                80
 04/15/2021   06:27:15   (  -0.10,-127.98) (   0.72,-124.25)  424.44                80
 04/15/2021   18:48:29   (   0.09,-128.04) (   0.39,-129.40)  155.13                80
 04/17/2021   18:38:57   (   0.09,-127.98) (  -0.25,-126.45)  174.01                80
 04/18/2021   07:00:21   (  -0.08,-127.89) (  -0.85,-131.64)  426.50                80
 04/20/2021   06:48:08   (  -0.07,-127.82) (  -0.27,-128.68)   98.20                80
 04/22/2021   06:33:16   (  -0.07,-127.74) (   0.38,-125.73)  229.74                80
 04/22/2021   18:54:31   (   0.07,-127.79) (   0.74,-130.88)  351.45                80
 04/24/2021   18:42:19   (   0.07,-127.71) (   0.08,-127.93)   23.95                80