Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 4 15.  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   07:10:25   (  -0.04,-137.19) (   0.43,-135.01)  249.28                80
 04/16/2021   19:31:40   (   0.04,-137.20) (   0.68,-140.16)  336.76                80
 04/18/2021   19:19:28   (   0.04,-137.19) (   0.04,-137.21)    2.39                80
 04/20/2021   19:09:56   (   0.03,-137.17) (  -0.61,-134.25)  331.53                80
 04/21/2021   07:31:20   (  -0.03,-137.15) (  -0.50,-139.45)  260.18                80
 04/23/2021   07:16:27   (  -0.03,-137.13) (   0.09,-136.48)   73.07                80
 04/25/2021   07:06:55   (  -0.03,-137.10) (   0.75,-133.53)  405.85                80
 04/25/2021   19:25:30   (   0.03,-137.09) (   0.37,-138.69)  180.99                80
 04/27/2021   19:15:57   (   0.03,-137.06) (  -0.23,-135.72)  150.96                80
 04/28/2021   07:34:40   (  -0.03,-137.04) (  -0.87,-140.92)  441.19                80