Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 8 21.  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)
 08/22/2021   07:10:56   (   0.03,-137.19) (   0.51,-135.01)  248.59                80
 08/22/2021   19:32:11   (  -0.03,-137.20) (   0.63,-140.16)  337.40                80
 08/24/2021   19:22:41   (  -0.03,-137.21) (  -0.05,-137.21)    1.95                80
 08/26/2021   19:10:30   (  -0.03,-137.21) (  -0.67,-134.25)  336.98                80
 08/27/2021   07:31:54   (   0.03,-137.21) (  -0.45,-139.44)  253.25                80
 08/29/2021   07:17:03   (   0.03,-137.21) (   0.18,-136.48)   83.05                80
 08/31/2021   07:04:52   (   0.03,-137.20) (   0.81,-133.52)  418.56                80
 08/31/2021   19:26:07   (  -0.03,-137.20) (   0.27,-138.68)  168.19                80
 09/02/2021   19:16:36   (  -0.02,-137.18) (  -0.30,-135.71)  166.54                80
 09/03/2021   07:38:00   (   0.01,-137.18) (  -0.75,-140.91)  423.99                80