Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 7 4.  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)
 07/04/2021   06:27:31   (   0.11,-128.16) (   0.96,-124.30)  439.57                80
 07/04/2021   18:48:46   (  -0.10,-128.13) (   0.17,-129.45)  149.94                80
 07/06/2021   18:39:15   (  -0.10,-128.07) (  -0.47,-126.49)  180.41                80
 07/07/2021   07:00:39   (   0.09,-128.08) (  -0.66,-131.68)  408.36                80
 07/09/2021   06:48:27   (   0.10,-128.02) (  -0.08,-128.71)   79.15                80
 07/11/2021   06:33:36   (   0.11,-127.95) (   0.56,-125.75)  249.48                80
 07/11/2021   18:54:51   (  -0.10,-127.90) (   0.56,-130.90)  341.87                80
 07/13/2021   18:42:40   (  -0.11,-127.82) (  -0.08,-127.94)   13.55                80
 07/15/2021   18:33:09   (  -0.11,-127.75) (  -0.73,-124.99)  314.48                80
 07/16/2021   06:54:33   (   0.10,-127.76) (  -0.39,-130.17)  273.54                80