Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 12 19.  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)
 12/19/2021   07:17:10   (   0.03,-137.20) (   0.17,-136.48)   81.20                80
 12/21/2021   07:04:58   (   0.03,-137.19) (   0.80,-133.52)  416.91                80
 12/21/2021   19:26:14   (  -0.03,-137.20) (   0.27,-138.69)  168.62                80
 12/23/2021   19:16:42   (  -0.02,-137.19) (  -0.36,-135.73)  166.58                80
 12/24/2021   07:38:05   (   0.02,-137.18) (  -0.80,-140.91)  424.84                80
 12/26/2021   07:25:53   (   0.02,-137.16) (  -0.17,-137.95)   90.24                80
 12/28/2021   07:11:01   (   0.02,-137.14) (   0.47,-134.99)  243.76                80
 12/28/2021   19:32:16   (  -0.02,-137.14) (   0.65,-140.14)  342.58                80
 12/30/2021   19:20:04   (  -0.02,-137.10) (   0.01,-137.19)    9.78                80
 01/01/2022   19:10:32   (  -0.02,-137.06) (  -0.64,-134.23)  322.22                80