Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 1 20.  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)
 01/21/2021   19:13:51   (   0.01,-137.21) (  -0.30,-135.70)  172.04                80
 01/22/2021   07:37:55   (  -0.01,-137.20) (  -0.81,-140.89)  420.01                80
 01/24/2021   07:23:04   (   0.02,-137.17) (  -0.16,-137.94)   87.39                80
 01/26/2021   07:13:33   (   0.01,-137.14) (   0.49,-134.99)  245.43                80
 01/26/2021   19:32:08   (  -0.01,-137.14) (   0.64,-140.14)  340.92                80
 01/28/2021   19:19:57   (  -0.00,-137.10) (  -0.01,-137.19)    9.72                80
 01/30/2021   19:10:25   (  -0.00,-137.06) (  -0.61,-134.23)  321.98                80
 01/31/2021   07:29:09   (   0.00,-137.03) (  -0.50,-139.42)  270.80                80
 02/02/2021   07:19:37   (  -0.00,-136.98) (   0.11,-136.46)   59.79                80