Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 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)
 01/19/2021   07:04:47   (  -0.00,-137.21) (   0.81,-133.50)  421.75                80
 01/19/2021   19:26:02   (   0.00,-137.22) (   0.31,-138.65)  163.35                80
 01/21/2021   19:16:29   (   0.01,-137.21) (  -0.29,-135.69)  172.89                80
 01/22/2021   07:37:53   (  -0.01,-137.20) (  -0.81,-140.88)  418.66                80
 01/24/2021   07:25:41   (  -0.01,-137.19) (  -0.14,-137.93)   83.43                80
 01/26/2021   07:10:48   (  -0.01,-137.17) (   0.46,-134.96)  251.02                80
 01/26/2021   19:32:03   (   0.02,-137.17) (   0.65,-140.11)  334.89                80
 01/28/2021   19:22:30   (   0.02,-137.14) (   0.05,-137.15)    3.55                80
 01/30/2021   19:10:18   (   0.01,-137.11) (  -0.62,-134.20)  331.44                80
 01/31/2021   07:31:41   (  -0.01,-137.09) (  -0.52,-139.38)  260.73                80