Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 8 21.  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)
 08/21/2021   06:27:45   (  -0.03,-128.28) (   0.83,-124.26)  457.07                80
 08/21/2021   18:51:40   (   0.06,-128.21) (   0.30,-129.41)  136.64                80
 08/23/2021   18:36:49   (   0.05,-128.22) (  -0.32,-126.45)  201.16                80
 08/24/2021   07:00:53   (  -0.08,-128.31) (  -0.81,-131.64)  378.93                80
 08/26/2021   06:48:43   (  -0.07,-128.32) (  -0.12,-128.69)   41.36                80
 08/28/2021   06:33:52   (  -0.07,-128.33) (   0.50,-125.73)  295.97                80
 08/28/2021   18:57:47   (   0.10,-128.25) (   0.64,-130.88)  298.66                80
 08/30/2021   18:42:56   (   0.09,-128.25) (   0.01,-127.92)   38.01                80
 09/01/2021   18:30:45   (   0.09,-128.25) (  -0.62,-124.97)  374.00                80
 09/02/2021   06:54:49   (  -0.12,-128.34) (  -0.49,-130.15)  206.09                80