Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 12 9.  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)
 12/10/2021   07:25:57   (   0.03,-137.21) (  -0.15,-137.96)   86.22                80
 12/12/2021   07:11:06   (   0.03,-137.21) (   0.51,-135.01)  250.40                80
 12/12/2021   19:35:01   (  -0.02,-137.21) (   0.61,-140.16)  335.81                80
 12/14/2021   19:20:10   (  -0.02,-137.21) (  -0.05,-137.21)    3.41                80
 12/16/2021   19:10:38   (  -0.02,-137.20) (  -0.66,-134.25)  335.70                80
 12/17/2021   07:32:02   (   0.02,-137.20) (  -0.45,-139.44)  254.83                80
 12/19/2021   07:17:10   (   0.02,-137.18) (   0.17,-136.48)   79.68                80
 12/21/2021   07:04:58   (   0.01,-137.16) (   0.78,-133.52)  413.59                80
 12/21/2021   19:26:14   (  -0.01,-137.15) (   0.29,-138.68)  173.63                80
 12/23/2021   19:16:42   (  -0.01,-137.12) (  -0.33,-135.72)  159.67                80