Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 8 17.  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)
 08/17/2021   06:54:47   (  -0.04,-128.25) (  -0.44,-130.17)  218.53                80
 08/19/2021   06:39:56   (  -0.03,-128.27) (   0.17,-127.21)  119.51                80
 08/19/2021   19:03:50   (   0.07,-128.19) (   0.96,-132.36)  474.87                80
 08/21/2021   06:27:46   (  -0.03,-128.28) (   0.85,-124.27)  457.33                80
 08/21/2021   18:51:40   (   0.06,-128.20) (   0.29,-129.41)  136.95                80
 08/23/2021   18:36:49   (   0.05,-128.22) (  -0.33,-126.45)  201.03                80
 08/24/2021   07:00:53   (  -0.08,-128.32) (  -0.80,-131.64)  378.40                80
 08/26/2021   06:48:43   (  -0.07,-128.33) (  -0.12,-128.69)   40.68                80
 08/28/2021   06:33:52   (  -0.06,-128.34) (   0.50,-125.74)  296.82                80
 08/28/2021   18:57:47   (   0.10,-128.26) (   0.64,-130.88)  298.38                80
 08/30/2021   18:42:56   (   0.09,-128.26) (   0.01,-127.92)   38.39                80