Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 12.  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) (   0.07,-127.20)   94.45                80
 04/13/2021   19:00:42   (   0.09,-128.10) (   0.98,-132.37)  485.15                80
 04/15/2021   06:27:14   (  -0.10,-127.98) (   0.71,-124.25)  424.35                80
 04/15/2021   18:48:29   (   0.09,-128.04) (   0.40,-129.40)  155.32                80
 04/17/2021   18:38:57   (   0.09,-127.98) (  -0.24,-126.45)  173.76                80
 04/18/2021   07:00:21   (  -0.08,-127.89) (  -0.87,-131.64)  426.69                80
 04/20/2021   06:48:08   (  -0.07,-127.82) (  -0.28,-128.68)   98.50                80
 04/22/2021   06:33:16   (  -0.07,-127.74) (   0.36,-125.72)  229.40                80
 04/22/2021   18:54:31   (   0.07,-127.79) (   0.75,-130.88)  351.88                80
 04/24/2021   18:42:19   (   0.07,-127.71) (   0.10,-127.93)   24.25                80