Simultaneous Nadir Overpasses (SNOs) between GOES-17 and LANDSAT-8
TLE Epoch: 2021 9 19.  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)
 09/19/2021   07:38:05   (   0.04,-137.20) (  -0.74,-140.92)  423.38                80
 09/21/2021   07:25:55   (   0.04,-137.19) (  -0.10,-137.97)   87.67                80
 09/23/2021   07:11:03   (   0.04,-137.18) (   0.47,-135.00)  247.76                80
 09/23/2021   19:32:18   (  -0.04,-137.18) (   0.60,-140.16)  338.98                80
 09/25/2021   19:20:07   (  -0.04,-137.16) (  -0.04,-137.20)    4.60                80
 09/27/2021   19:10:36   (  -0.03,-137.14) (  -0.62,-134.24)  329.45                80
 09/28/2021   07:32:00   (   0.03,-137.13) (  -0.43,-139.44)  261.47                80
 09/30/2021   07:17:08   (   0.03,-137.10) (   0.15,-136.47)   71.49                80
 10/02/2021   07:04:57   (   0.02,-137.06) (   0.80,-133.52)  403.87                80
 10/02/2021   19:26:12   (  -0.02,-137.05) (   0.34,-138.66)  183.76                80