Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 1 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 01/09/2021   06:30:27   (  -0.11,-128.15) (   0.74,-124.23)  446.24                80
 01/09/2021   18:49:02   (   0.08,-128.16) (   0.32,-129.40)  139.69                80
 01/11/2021   18:39:30   (   0.08,-128.13) (  -0.26,-126.43)  193.24                80
 01/12/2021   06:58:14   (  -0.05,-128.10) (  -0.77,-131.63)  401.19                80
 01/14/2021   06:46:01   (  -0.06,-128.06) (  -0.19,-128.66)   68.36                80
 01/16/2021   06:36:28   (  -0.07,-128.03) (   0.40,-125.70)  264.38                80
 01/16/2021   18:55:04   (   0.03,-128.04) (   0.66,-130.86)  321.10                80
 01/18/2021   18:45:32   (   0.04,-128.00) (   0.00,-127.91)   11.58                80
 01/20/2021   18:33:19   (   0.05,-127.96) (  -0.59,-124.94)  343.77                80
 01/21/2021   06:52:03   (  -0.01,-127.92) (  -0.50,-130.13)  251.48                80