Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 9 11.  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)
 09/11/2021   06:46:14   (   0.33,-128.18) (   0.23,-128.77)   66.89                80
 09/13/2021   06:36:42   (   0.32,-128.13) (   0.79,-125.80)  264.44                80
 09/13/2021   18:55:18   (  -0.35,-128.06) (   0.28,-130.96)  329.73                80
 09/15/2021   18:45:47   (  -0.34,-128.01) (  -0.35,-128.00)    0.95                80
 09/17/2021   18:33:36   (  -0.33,-127.95) (  -0.98,-125.05)  331.01                80
 09/18/2021   06:52:19   (   0.35,-127.99) (  -0.14,-130.23)  255.26                80
 09/20/2021   06:42:49   (   0.35,-127.94) (   0.50,-127.28)   75.00                80
 09/22/2021   06:30:38   (   0.35,-127.88) (   1.14,-124.32)  405.25                80
 09/22/2021   18:49:12   (  -0.36,-127.81) (   0.00,-129.47)  189.26                80
 09/24/2021   18:39:41   (  -0.36,-127.75) (  -0.64,-126.52)  140.54                80