Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 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)
 09/14/2021   07:19:48   (   0.04,-137.18) (   0.21,-136.49)   79.45                80
 09/16/2021   07:07:37   (   0.03,-137.16) (   0.84,-133.53)  413.49                80
 09/16/2021   19:26:12   (  -0.03,-137.16) (   0.30,-138.68)  173.51                80
 09/18/2021   19:16:41   (  -0.03,-137.13) (  -0.33,-135.72)  160.38                80
 09/19/2021   07:38:05   (   0.03,-137.13) (  -0.79,-140.91)  430.40                80
 09/20/2021   19:04:30   (  -0.03,-137.11) (  -0.97,-132.77)  494.16                80
 09/21/2021   07:25:54   (   0.03,-137.11) (  -0.15,-137.96)   96.68                80
 09/23/2021   07:11:03   (   0.03,-137.08) (   0.49,-135.00)  236.66                80
 09/23/2021   19:32:18   (  -0.03,-137.07) (   0.65,-140.15)  350.71                80
 09/25/2021   19:20:07   (  -0.03,-137.03) (   0.01,-137.19)   18.14                80