Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 6 26.  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) (  -0.16,-127.98)   34.83                80
 06/29/2021   18:33:09   (  -0.12,-128.25) (  -0.78,-125.02)  366.98                80
 06/30/2021   06:54:33   (   0.11,-128.26) (  -0.28,-130.22)  222.32                80
 07/02/2021   06:39:42   (   0.12,-128.22) (   0.35,-127.26)  109.66                80
 07/02/2021   19:00:57   (  -0.11,-128.19) (   0.78,-132.41)  480.12                80
 07/04/2021   06:27:31   (   0.12,-128.18) (   0.92,-124.29)  441.32                80
 07/04/2021   18:48:46   (  -0.11,-128.14) (   0.15,-129.45)  148.38                80
 07/06/2021   18:39:15   (  -0.11,-128.09) (  -0.48,-126.49)  182.78                80
 07/07/2021   07:00:39   (   0.10,-128.11) (  -0.64,-131.68)  405.33                80
 07/09/2021   06:48:27   (   0.10,-128.05) (  -0.06,-128.71)   75.32                80