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   07:25:58   (   0.03,-137.21) (  -0.13,-137.97)   86.11                80
 12/12/2021   07:11:06   (   0.03,-137.21) (   0.47,-135.00)  250.65                80
 12/12/2021   19:35:01   (  -0.02,-137.21) (   0.60,-140.17)  335.65                80
 12/14/2021   19:22:50   (  -0.02,-137.21) (  -0.01,-137.20)    2.24                80
 12/16/2021   19:10:39   (  -0.02,-137.21) (  -0.67,-134.26)  336.15                80
 12/17/2021   07:32:02   (   0.02,-137.21) (  -0.43,-139.45)  254.24                80
 12/19/2021   07:17:10   (   0.02,-137.19) (   0.18,-136.48)   80.43                80
 12/21/2021   07:04:58   (   0.01,-137.17) (   0.80,-133.52)  414.48                80
 12/21/2021   19:26:13   (  -0.01,-137.16) (   0.33,-138.67)  172.80                80