Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 16.  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)
 04/16/2021   07:11:39   (  -0.04,-137.19) (   0.42,-135.00)  249.30                 6
 04/16/2021   19:31:40   (   0.04,-137.20) (   0.69,-140.16)  336.79                80
 04/18/2021   19:19:28   (   0.04,-137.18) (   0.05,-137.20)    2.36                80
 04/20/2021   19:09:56   (   0.03,-137.16) (  -0.60,-134.25)  331.46                80
 04/21/2021   07:31:19   (  -0.03,-137.15) (  -0.51,-139.44)  260.19                80
 04/23/2021   07:16:27   (  -0.03,-137.13) (   0.08,-136.48)   73.06                80
 04/25/2021   07:06:55   (  -0.03,-137.10) (   0.74,-133.53)  405.77                80
 04/25/2021   19:25:29   (   0.03,-137.09) (   0.38,-138.68)  181.12                80
 04/27/2021   19:15:57   (   0.03,-137.05) (  -0.28,-135.73)  150.80                80
 04/28/2021   07:34:40   (  -0.03,-137.04) (  -0.88,-140.91)  441.30                80
 04/29/2021   19:03:45   (   0.02,-137.01) (  -0.87,-132.77)  481.68                80