Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 8 15.  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)
 08/15/2021   07:07:28   (   0.02,-137.20) (   0.77,-133.52)  417.43                80
 08/15/2021   19:26:03   (  -0.02,-137.20) (   0.30,-138.68)  168.61                80
 08/17/2021   19:16:32   (  -0.02,-137.19) (  -0.31,-135.72)  166.65                80
 08/18/2021   07:35:17   (   0.02,-137.18) (  -0.76,-140.92)  424.53                80
 08/20/2021   07:23:06   (   0.02,-137.17) (  -0.15,-137.96)   90.24                80
 08/22/2021   07:10:55   (   0.03,-137.15) (   0.47,-135.00)  243.87                80
 08/22/2021   19:32:11   (  -0.03,-137.15) (   0.61,-140.16)  342.64                80
 08/24/2021   19:20:00   (  -0.03,-137.13) (  -0.01,-137.20)    8.48                80
 08/26/2021   19:10:29   (  -0.03,-137.10) (  -0.63,-134.24)  325.33                80
 08/27/2021   07:31:53   (   0.02,-137.10) (  -0.49,-139.43)  265.87                80