Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 6 22.  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)
 06/23/2021   19:10:09   (   0.03,-137.20) (  -0.58,-134.25)  334.20                80
 06/24/2021   07:31:13   (  -0.02,-137.19) (  -0.49,-139.45)  256.70                59
 06/26/2021   07:16:43   (  -0.02,-137.18) (   0.13,-136.49)   78.83                80
 06/28/2021   07:04:32   (  -0.02,-137.17) (   0.76,-133.53)  414.07                80
 06/28/2021   19:25:48   (   0.02,-137.17) (   0.31,-138.69)  172.20                80
 06/30/2021   19:16:17   (   0.02,-137.16) (  -0.31,-135.74)  162.99                80
 07/01/2021   07:37:41   (  -0.01,-137.16) (  -0.81,-140.92)  427.87                80
 07/02/2021   19:04:06   (   0.02,-137.15) (  -0.94,-132.78)  497.88                80
 07/03/2021   07:25:30   (  -0.02,-137.14) (  -0.18,-137.96)   93.09                80
 07/05/2021   07:10:39   (  -0.02,-137.12) (   0.45,-135.01)  241.07                80
 07/05/2021   19:31:53   (   0.01,-137.12) (   0.69,-140.15)  345.82                80