Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 6 30.  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) (  -0.30,-135.73)  166.15                80
 07/01/2021   07:35:00   (  -0.01,-137.18) (  -0.83,-140.92)  425.14                80
 07/03/2021   07:22:49   (  -0.01,-137.18) (  -0.20,-137.96)   89.54                80
 07/05/2021   07:13:18   (  -0.01,-137.16) (   0.44,-135.00)  245.56                80
 07/05/2021   19:31:54   (   0.01,-137.16) (   0.63,-140.16)  340.48                80
 07/07/2021   19:19:42   (   0.02,-137.14) (   0.05,-137.19)    6.76                80
 07/09/2021   19:10:11   (   0.02,-137.11) (  -0.59,-134.24)  326.80                80
 07/10/2021   07:31:35   (  -0.02,-137.10) (  -0.53,-139.42)  265.11                80
 07/12/2021   07:16:44   (  -0.01,-137.06) (   0.11,-136.47)   67.16                80