Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 12 25.  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)
 12/25/2021   06:40:04   (   0.09,-127.98) (   0.24,-127.22)   85.69                80
 12/25/2021   19:03:59   (  -0.08,-128.00) (   0.88,-132.37)  497.93                80
 12/27/2021   06:27:52   (   0.09,-128.03) (   0.88,-124.26)  428.31                80
 12/27/2021   18:51:47   (  -0.08,-128.05) (   0.24,-129.42)  155.43                80
 12/29/2021   18:36:55   (  -0.08,-128.10) (  -0.41,-126.46)  186.40                80
 12/30/2021   07:00:59   (   0.07,-128.11) (  -0.69,-131.65)  402.89                80
 01/01/2022   06:48:47   (   0.07,-128.15) (  -0.03,-128.70)   62.24                80
 01/03/2022   06:33:54   (   0.07,-128.18) (   0.58,-125.73)  277.92                80
 01/03/2022   18:57:49   (  -0.06,-128.19) (   0.54,-130.88)  306.68                80
 01/05/2022   18:42:57   (  -0.06,-128.22) (  -0.13,-127.93)   33.47                80
 01/07/2022   18:30:44   (  -0.05,-128.25) (  -0.75,-124.97)  373.66                80