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   06:27:31   (   0.09,-127.61) (   0.78,-124.25)  381.84                80
 07/20/2021   18:48:47   (  -0.07,-127.55) (   0.30,-129.41)  210.39                80
 07/22/2021   18:39:16   (  -0.08,-127.46) (  -0.28,-126.44)  115.65                80
 07/23/2021   07:00:41   (   0.06,-127.48) (  -0.80,-131.64)  472.26                80
 07/24/2021   18:27:06   (  -0.09,-127.37) (  -0.92,-123.49)  441.34                80
 07/25/2021   06:48:30   (   0.07,-127.38) (  -0.22,-128.67)  146.69                80
 07/27/2021   06:33:40   (   0.08,-127.29) (   0.42,-125.72)  178.88                80
 07/27/2021   18:57:35   (  -0.06,-127.22) (   0.72,-130.87)  414.67                80
 07/29/2021   18:42:45   (  -0.06,-127.13) (   0.08,-127.91)   88.94                80
 07/31/2021   18:30:34   (  -0.07,-127.03) (  -0.51,-124.95)  236.57                80
 08/01/2021   06:54:38   (   0.04,-127.06) (  -0.63,-130.13)  350.28                80