Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 21.  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)
 09/22/2021   06:30:38   (   0.35,-127.86) (   1.13,-124.32)  403.33                80
 09/22/2021   18:49:12   (  -0.36,-127.81) (   0.01,-129.47)  189.74                80
 09/24/2021   18:39:41   (  -0.36,-127.74) (  -0.63,-126.52)  139.53                80
 09/25/2021   06:58:25   (   0.37,-127.77) (  -0.48,-131.70)  448.27                80
 09/26/2021   18:27:29   (  -0.35,-127.67) (  -1.21,-123.55)  468.24                80
 09/27/2021   06:46:14   (   0.36,-127.69) (   0.16,-128.75)  119.72                80
 09/29/2021   06:36:42   (   0.36,-127.61) (   0.74,-125.78)  208.19                80
 09/29/2021   18:55:18   (  -0.37,-127.55) (   0.33,-130.94)  385.51                80
 10/01/2021   18:43:06   (  -0.36,-127.46) (  -0.26,-127.98)   58.21                80
 10/03/2021   18:33:34   (  -0.36,-127.37) (  -0.85,-125.01)  268.64                80
 10/04/2021   06:52:18   (   0.37,-127.40) (  -0.26,-130.20)  319.46                80