Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 12 18.  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)   81.03                80
 12/21/2021   07:04:58   (   0.03,-137.19) (   0.79,-133.52)  416.19                80
 12/21/2021   19:26:14   (  -0.02,-137.19) (   0.27,-138.69)  169.68                80
 12/23/2021   19:16:42   (  -0.02,-137.17) (  -0.36,-135.73)  164.96                80
 12/24/2021   07:38:05   (   0.02,-137.16) (  -0.81,-140.91)  426.51                80
 12/25/2021   19:04:29   (  -0.02,-137.15) (  -0.93,-132.76)  499.11                80
 12/26/2021   07:25:53   (   0.02,-137.14) (  -0.18,-137.95)   92.48                80
 12/28/2021   07:11:01   (   0.02,-137.11) (   0.46,-134.99)  240.97                80
 12/28/2021   19:32:17   (  -0.02,-137.11) (   0.60,-140.15)  345.69                80
 12/30/2021   19:20:04   (  -0.01,-137.07) (   0.02,-137.18)   13.40                80