Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 17.  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)
 04/17/2021   18:38:57   (   0.08,-127.98) (  -0.21,-126.44)  173.63                80
 04/18/2021   07:00:21   (  -0.07,-127.89) (  -0.89,-131.64)  426.78                80
 04/20/2021   06:48:09   (  -0.07,-127.81) (  -0.25,-128.68)   98.60                80
 04/22/2021   06:33:16   (  -0.07,-127.74) (   0.34,-125.72)  229.21                80
 04/22/2021   18:54:31   (   0.06,-127.79) (   0.71,-130.89)  352.19                80
 04/24/2021   18:42:18   (   0.07,-127.71) (   0.12,-127.92)   24.58                80
 04/26/2021   18:32:46   (   0.07,-127.62) (  -0.47,-124.96)  302.53                80
 04/27/2021   06:54:09   (  -0.06,-127.54) (  -0.63,-130.15)  297.27                80
 04/29/2021   06:39:16   (  -0.06,-127.45) (  -0.03,-127.19)   28.83                80