Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 6 29.  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)
 06/30/2021   19:16:16   (   0.01,-137.19) (  -0.29,-135.73)  166.05                80
 07/01/2021   07:35:01   (  -0.01,-137.18) (  -0.78,-140.93)  425.32                80
 07/03/2021   07:22:49   (  -0.01,-137.17) (  -0.21,-137.96)   89.83                80
 07/05/2021   07:13:18   (  -0.01,-137.16) (   0.43,-135.00)  245.23                80
 07/05/2021   19:31:54   (   0.01,-137.16) (   0.64,-140.16)  340.78                80
 07/07/2021   19:19:43   (   0.02,-137.14) (   0.00,-137.20)    7.56                80
 07/09/2021   19:10:11   (   0.02,-137.11) (  -0.58,-134.23)  326.35                80
 07/10/2021   07:31:35   (  -0.02,-137.09) (  -0.54,-139.42)  265.64                80
 07/12/2021   07:16:44   (  -0.01,-137.05) (   0.10,-136.46)   66.57                80