Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2020 9 18.  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)
 09/19/2020   06:27:51   (  -0.05,-128.30) (   0.81,-124.27)  458.91                80
 09/19/2020   18:51:45   (   0.06,-128.27) (   0.33,-129.41)  131.18                80
 09/21/2020   18:36:55   (   0.06,-128.30) (  -0.34,-126.47)  208.83                80
 09/22/2020   07:00:59   (  -0.07,-128.36) (  -0.79,-131.65)  375.15                80
 09/24/2020   06:48:48   (  -0.08,-128.39) (  -0.17,-128.69)   36.03                80
 09/26/2020   06:33:58   (  -0.08,-128.41) (   0.50,-125.75)  303.02                80
 09/26/2020   18:57:53   (   0.09,-128.37) (   0.64,-130.89)  287.66                80
 09/28/2020   18:43:03   (   0.09,-128.39) (  -0.03,-127.95)   51.13                80
 09/30/2020   18:30:52   (   0.09,-128.42) (  -0.64,-124.99)  389.67                80
 10/01/2020   06:54:56   (  -0.10,-128.47) (  -0.47,-130.18)  194.44                80