Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 8 16.  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)
 08/16/2021   18:30:42   (   0.01,-128.16) (  -0.67,-124.98)  361.52                80
 08/17/2021   06:54:46   (  -0.04,-128.25) (  -0.46,-130.17)  218.53                80
 08/19/2021   06:39:56   (  -0.03,-128.27) (   0.21,-127.22)  119.52                80
 08/19/2021   19:03:51   (   0.06,-128.19) (   0.93,-132.37)  474.94                80
 08/21/2021   06:27:45   (  -0.03,-128.28) (   0.82,-124.26)  457.34                80
 08/21/2021   18:51:40   (   0.06,-128.20) (   0.31,-129.41)  136.99                80
 08/23/2021   18:36:49   (   0.04,-128.22) (  -0.30,-126.45)  200.99                80
 08/24/2021   07:00:54   (  -0.08,-128.32) (  -0.76,-131.65)  378.40                80
 08/26/2021   06:48:43   (  -0.07,-128.33) (  -0.14,-128.69)   40.55                80
 08/28/2021   06:33:52   (  -0.06,-128.34) (   0.48,-125.73)  296.84                80
 08/28/2021   18:57:47   (   0.09,-128.25) (   0.66,-130.88)  298.42                80