Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 5 4.  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)
 05/04/2021   19:21:58   (   0.04,-137.20) (   0.02,-137.21)    2.00                80
 05/06/2021   19:09:45   (   0.04,-137.20) (  -0.59,-134.25)  335.44                80
 05/07/2021   07:31:09   (  -0.03,-137.19) (  -0.51,-139.44)  256.60                80
 05/09/2021   07:16:16   (  -0.03,-137.18) (   0.11,-136.48)   79.10                80
 05/11/2021   07:04:03   (  -0.03,-137.17) (   0.73,-133.52)  414.16                80
 05/11/2021   19:25:19   (   0.03,-137.18) (   0.32,-138.69)  171.22                80
 05/13/2021   19:15:46   (   0.02,-137.16) (  -0.30,-135.73)  162.85                80
 05/14/2021   07:37:09   (  -0.02,-137.14) (  -0.85,-140.91)  429.69                80
 05/15/2021   19:03:33   (   0.02,-137.13) (  -0.92,-132.77)  495.97                80
 05/16/2021   07:24:56   (  -0.02,-137.11) (  -0.22,-137.96)   96.79                80