Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 12 20.  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   07:04:58   (   0.03,-137.19) (   0.79,-133.52)  416.72                80
 12/21/2021   19:26:14   (  -0.03,-137.20) (   0.27,-138.69)  168.74                80
 12/23/2021   19:16:42   (  -0.02,-137.19) (  -0.36,-135.73)  166.35                80
 12/24/2021   07:38:05   (   0.02,-137.17) (  -0.80,-140.91)  425.20                80
 12/26/2021   07:25:53   (   0.02,-137.15) (  -0.16,-137.95)   90.68                80
 12/28/2021   07:11:01   (   0.02,-137.13) (   0.49,-134.99)  243.20                80
 12/28/2021   19:32:16   (  -0.02,-137.13) (   0.63,-140.15)  343.04                80
 12/30/2021   19:20:04   (  -0.02,-137.10) (  -0.02,-137.19)   10.58                80
 01/01/2022   19:10:31   (  -0.02,-137.05) (  -0.62,-134.22)  321.56                80
 01/02/2022   07:31:55   (   0.01,-137.03) (  -0.47,-139.42)  270.61                80