Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 3.  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)
 01/03/2021   07:04:55   (   0.00,-137.21) (   0.80,-133.52)  419.30                80
 01/03/2021   19:28:50   (   0.01,-137.21) (   0.32,-138.67)  165.99                80
 01/05/2021   19:13:58   (   0.01,-137.20) (  -0.31,-135.71)  169.11                80
 01/06/2021   07:38:02   (  -0.01,-137.19) (  -0.79,-140.91)  422.65                80
 01/08/2021   07:25:50   (   0.00,-137.17) (  -0.15,-137.95)   88.82                80
 01/10/2021   07:10:58   (   0.02,-137.14) (   0.49,-134.99)  244.17                80
 01/10/2021   19:32:13   (  -0.02,-137.14) (   0.63,-140.14)  342.03                80
 01/12/2021   19:20:01   (  -0.01,-137.10) (  -0.02,-137.19)    9.85                80
 01/14/2021   19:10:28   (  -0.01,-137.06) (  -0.61,-134.22)  322.98                80
 01/15/2021   07:29:12   (   0.01,-137.04) (  -0.49,-139.41)  269.32                80