Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 6 29.  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)
 06/29/2021   18:33:09   (  -0.12,-128.25) (  -0.79,-125.02)  366.77                80
 06/30/2021   06:54:33   (   0.11,-128.25) (  -0.33,-130.21)  222.86                80
 07/02/2021   06:39:42   (   0.11,-128.21) (   0.30,-127.25)  108.79                80
 07/02/2021   19:00:57   (  -0.10,-128.18) (   0.77,-132.41)  480.78                80
 07/04/2021   06:27:31   (   0.12,-128.16) (   0.93,-124.29)  440.11                80
 07/04/2021   18:48:45   (  -0.11,-128.13) (   0.20,-129.44)  149.38                80
 07/06/2021   18:39:14   (  -0.11,-128.08) (  -0.44,-126.48)  181.44                80
 07/07/2021   07:00:38   (   0.10,-128.09) (  -0.69,-131.67)  407.04                80
 07/09/2021   06:48:27   (   0.10,-128.03) (  -0.05,-128.71)   77.30                80
 07/11/2021   06:33:36   (   0.11,-127.97) (   0.60,-125.76)  251.74                80
 07/11/2021   18:54:51   (  -0.10,-127.92) (   0.53,-130.90)  339.71                80