Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 6 27.  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)
 06/27/2021   18:45:20   (  -0.11,-128.29) (  -0.19,-127.98)   34.81                80
 06/29/2021   18:33:09   (  -0.12,-128.25) (  -0.81,-125.03)  366.86                80
 06/30/2021   06:54:33   (   0.11,-128.26) (  -0.31,-130.21)  222.55                80
 07/02/2021   06:39:42   (   0.12,-128.22) (   0.32,-127.25)  109.28                80
 07/02/2021   19:00:57   (  -0.11,-128.18) (   0.81,-132.40)  480.37                80
 07/04/2021   06:27:31   (   0.12,-128.17) (   0.95,-124.30)  440.85                80
 07/04/2021   18:48:46   (  -0.11,-128.14) (   0.18,-129.44)  148.72                80
 07/06/2021   18:39:15   (  -0.11,-128.09) (  -0.46,-126.49)  182.30                80
 07/07/2021   07:00:39   (   0.10,-128.11) (  -0.67,-131.67)  405.92                80
 07/09/2021   06:48:28   (   0.10,-128.05) (  -0.03,-128.72)   75.97                80