Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 16.  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)
 09/16/2021   07:04:57   (   0.04,-137.20) (   0.83,-133.53)  417.70                80
 09/16/2021   19:26:12   (  -0.04,-137.20) (   0.31,-138.68)  169.11                80
 09/18/2021   19:16:41   (  -0.04,-137.20) (  -0.32,-135.72)  166.94                80
 09/19/2021   07:38:06   (   0.03,-137.20) (  -0.73,-140.92)  422.99                80
 09/21/2021   07:25:55   (   0.03,-137.19) (  -0.10,-137.97)   87.20                80
 09/23/2021   07:11:03   (   0.03,-137.19) (   0.48,-135.00)  248.33                80
 09/23/2021   19:32:18   (  -0.03,-137.18) (   0.60,-140.16)  338.82                80
 09/25/2021   19:20:07   (  -0.03,-137.16) (  -0.04,-137.20)    4.49                80
 09/27/2021   19:10:36   (  -0.03,-137.14) (  -0.62,-134.24)  329.82                80
 09/28/2021   07:32:00   (   0.03,-137.14) (  -0.43,-139.44)  260.60                80