Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 8 13.  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)
 08/14/2021   18:42:53   (   0.01,-128.13) (  -0.04,-127.94)   22.16                80
 08/16/2021   18:30:42   (   0.01,-128.16) (  -0.65,-124.98)  361.11                80
 08/17/2021   06:54:47   (  -0.04,-128.25) (  -0.42,-130.18)  218.82                80
 08/19/2021   06:39:56   (  -0.03,-128.26) (   0.19,-127.22)  119.07                80
 08/19/2021   19:03:51   (   0.06,-128.18) (   0.95,-132.36)  475.56                80
 08/21/2021   06:27:45   (  -0.02,-128.28) (   0.81,-124.26)  456.76                80
 08/21/2021   18:51:40   (   0.05,-128.20) (   0.33,-129.40)  137.80                80
 08/23/2021   18:36:50   (   0.04,-128.21) (  -0.35,-126.46)  200.00                80
 08/24/2021   07:00:54   (  -0.07,-128.31) (  -0.77,-131.65)  379.25                80
 08/26/2021   06:48:43   (  -0.07,-128.32) (  -0.15,-128.69)   41.56                80