Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 7 19.  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)
 07/20/2021   06:27:32   (   0.09,-127.61) (   0.80,-124.25)  381.80                80
 07/20/2021   18:48:47   (  -0.07,-127.55) (   0.34,-129.40)  210.30                80
 07/22/2021   18:39:17   (  -0.07,-127.46) (  -0.30,-126.44)  115.74                80
 07/23/2021   07:00:40   (   0.06,-127.48) (  -0.84,-131.63)  472.26                80
 07/24/2021   18:27:07   (  -0.08,-127.37) (  -0.94,-123.49)  441.46                80
 07/25/2021   06:48:30   (   0.07,-127.38) (  -0.20,-128.67)  146.68                80
 07/27/2021   06:33:40   (   0.08,-127.29) (   0.44,-125.72)  178.92                80
 07/27/2021   18:57:35   (  -0.05,-127.22) (   0.70,-130.87)  414.56                80
 07/29/2021   18:45:24   (  -0.06,-127.13) (   0.12,-127.90)   88.78                80
 07/31/2021   18:30:34   (  -0.07,-127.03) (  -0.52,-124.95)  236.72                80
 08/01/2021   06:54:38   (   0.04,-127.06) (  -0.61,-130.14)  350.23                80