Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 1 1.  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)
 01/02/2021   18:45:39   (   0.12,-128.23) (   0.08,-127.91)   36.32                80
 01/04/2021   18:33:27   (   0.14,-128.21) (  -0.55,-124.95)  370.73                80
 01/05/2021   06:52:11   (  -0.10,-128.19) (  -0.49,-130.16)  222.34                80
 01/07/2021   06:42:38   (  -0.11,-128.17) (   0.09,-127.19)  111.56                80
 01/07/2021   19:01:14   (   0.07,-128.18) (   0.97,-132.35)  474.52                80
 01/09/2021   06:30:27   (  -0.11,-128.14) (   0.73,-124.23)  444.84                80
 01/09/2021   18:49:02   (   0.08,-128.15) (   0.33,-129.39)  141.52                80
 01/11/2021   18:39:29   (   0.08,-128.11) (  -0.25,-126.42)  190.89                80
 01/12/2021   06:58:14   (  -0.05,-128.08) (  -0.78,-131.63)  403.25                80
 01/14/2021   06:46:01   (  -0.06,-128.04) (  -0.19,-128.66)   70.94                80