Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 04/12/2021   07:37:29   (  -0.04,-137.18) (  -0.85,-140.91)  424.04                80
 04/14/2021   07:25:17   (  -0.04,-137.16) (  -0.22,-137.96)   90.21                80
 04/16/2021   07:10:25   (  -0.04,-137.14) (   0.42,-135.00)  242.80                80
 04/16/2021   19:31:40   (   0.04,-137.14) (   0.69,-140.16)  343.39                80
 04/18/2021   19:19:28   (   0.03,-137.10) (   0.05,-137.20)   11.51                80
 04/20/2021   19:09:56   (   0.03,-137.06) (  -0.60,-134.25)  319.77                80
 04/21/2021   07:28:38   (  -0.03,-137.04) (  -0.57,-139.43)  273.12                80
 04/23/2021   07:19:07   (  -0.02,-136.99) (   0.08,-136.48)   57.54                80
 04/25/2021   07:06:54   (  -0.02,-136.93) (   0.68,-133.52)  387.79                80
 04/25/2021   19:25:29   (   0.02,-136.93) (   0.38,-138.68)  199.22                80