Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 13.  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)
 01/14/2021   19:07:49   (   0.01,-137.23) (  -0.65,-134.23)  341.19                80
 01/15/2021   07:31:51   (  -0.01,-137.22) (  -0.50,-139.41)  250.03                80
 01/17/2021   07:16:59   (  -0.01,-137.22) (   0.15,-136.46)   86.52                80
 01/17/2021   19:40:54   (   0.01,-137.23) (   0.97,-141.61)  498.75                80
 01/19/2021   07:04:47   (  -0.01,-137.22) (   0.80,-133.50)  422.82                80
 01/19/2021   19:28:42   (   0.01,-137.22) (   0.31,-138.65)  162.56                80
 01/21/2021   19:13:49   (   0.01,-137.22) (  -0.28,-135.69)  173.15                80
 01/22/2021   07:37:53   (  -0.02,-137.20) (  -0.81,-140.88)  418.37                80
 01/24/2021   07:25:40   (  -0.02,-137.19) (  -0.21,-137.91)   83.68                80
 01/26/2021   07:10:48   (  -0.02,-137.16) (   0.46,-134.96)  250.31                80
 01/26/2021   19:34:43   (   0.03,-137.16) (   0.66,-140.11)  335.79                80