Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 12 21.  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)
 12/21/2021   07:04:59   (   0.03,-137.20) (   0.84,-133.53)  417.83                80
 12/21/2021   19:26:14   (  -0.02,-137.21) (   0.28,-138.68)  167.49                80
 12/23/2021   19:16:42   (  -0.02,-137.21) (  -0.35,-135.73)  168.68                80
 12/24/2021   07:38:06   (   0.02,-137.20) (  -0.75,-140.92)  422.39                80
 12/26/2021   07:25:53   (   0.02,-137.19) (  -0.17,-137.95)   86.81                80
 12/28/2021   07:11:01   (   0.02,-137.18) (   0.47,-134.99)  248.24                80
 12/28/2021   19:32:16   (  -0.01,-137.18) (   0.65,-140.14)  337.89                80
 12/30/2021   19:20:04   (  -0.02,-137.15) (  -0.01,-137.19)    4.07                80
 01/01/2022   19:10:31   (  -0.02,-137.12) (  -0.61,-134.22)  328.94                80
 01/02/2022   07:31:54   (   0.02,-137.10) (  -0.48,-139.41)  262.80                80