Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 5 9.  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)
 05/10/2021   18:44:55   (   0.00,-128.02) (   0.02,-127.95)    8.38                80
 05/12/2021   18:32:47   (   0.01,-128.08) (  -0.67,-125.00)  350.66                80
 05/13/2021   06:54:10   (   0.00,-128.07) (  -0.47,-130.19)  241.14                80
 05/15/2021   06:39:21   (  -0.00,-128.12) (   0.21,-127.25)  100.64                80
 05/15/2021   19:00:37   (  -0.01,-128.16) (   0.88,-132.40)  482.37                80
 05/17/2021   06:27:11   (  -0.00,-128.17) (   0.84,-124.29)  441.71                80
 05/17/2021   18:48:27   (  -0.01,-128.21) (   0.25,-129.45)  141.19                80
 05/19/2021   18:38:57   (  -0.01,-128.25) (  -0.38,-126.49)  199.53                80
 05/20/2021   07:00:22   (   0.02,-128.25) (  -0.69,-131.69)  391.11                80
 05/22/2021   06:48:11   (   0.01,-128.29) (  -0.11,-128.73)   50.94                80