Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 13.  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)
 04/13/2021   06:39:26   (  -0.10,-128.03) (   0.05,-127.20)   94.52                80
 04/13/2021   19:00:42   (   0.09,-128.10) (   1.00,-132.36)  485.18                80
 04/15/2021   06:27:14   (  -0.10,-127.98) (   0.69,-124.24)  424.33                80
 04/15/2021   18:48:30   (   0.09,-128.04) (   0.36,-129.41)  155.39                80
 04/17/2021   18:38:57   (   0.08,-127.98) (  -0.22,-126.45)  173.66                80
 04/18/2021   07:00:21   (  -0.08,-127.89) (  -0.89,-131.64)  426.77                80
 04/20/2021   06:48:09   (  -0.07,-127.81) (  -0.24,-128.69)   98.60                80
 04/22/2021   06:33:16   (  -0.07,-127.74) (   0.35,-125.72)  229.23                80
 04/22/2021   18:54:32   (   0.07,-127.79) (   0.71,-130.89)  352.10                80
 04/24/2021   18:42:19   (   0.07,-127.71) (   0.12,-127.92)   24.46                80
 04/26/2021   18:32:46   (   0.07,-127.62) (  -0.48,-124.96)  302.63                80