Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 18.  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)
 04/18/2021   19:19:28   (   0.04,-137.18) (   0.03,-137.21)    3.31                80
 04/20/2021   19:09:55   (   0.04,-137.16) (  -0.56,-134.24)  331.43                80
 04/21/2021   07:31:19   (  -0.04,-137.15) (  -0.55,-139.44)  260.28                80
 04/23/2021   07:16:27   (  -0.03,-137.13) (   0.10,-136.48)   72.84                80
 04/25/2021   07:06:54   (  -0.03,-137.09) (   0.70,-133.52)  405.55                80
 04/25/2021   19:25:30   (   0.03,-137.09) (   0.36,-138.69)  181.36                80
 04/27/2021   19:15:57   (   0.03,-137.05) (  -0.24,-135.72)  150.45                80
 04/28/2021   07:34:41   (  -0.03,-137.03) (  -0.86,-140.92)  441.67                80
 04/29/2021   19:03:45   (   0.03,-137.00) (  -0.90,-132.77)  481.25                80
 04/30/2021   07:22:28   (  -0.03,-136.98) (  -0.26,-137.96)  111.15                80