Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 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)
 04/01/2021   18:39:04   (   0.13,-128.36) (  -0.27,-126.44)  218.01                80
 04/02/2021   07:00:28   (  -0.12,-128.26) (  -0.84,-131.63)  382.99                80
 04/04/2021   06:48:16   (  -0.12,-128.23) (  -0.22,-128.68)   50.85                80
 04/06/2021   06:33:24   (  -0.12,-128.19) (   0.41,-125.72)  281.10                80
 04/06/2021   18:54:39   (   0.11,-128.27) (   0.64,-130.89)  297.27                80
 04/08/2021   18:45:08   (   0.11,-128.23) (   0.01,-127.93)   35.04                80
 04/10/2021   18:32:55   (   0.11,-128.20) (  -0.56,-124.97)  367.07                80
 04/11/2021   06:54:18   (  -0.10,-128.11) (  -0.55,-130.16)  233.26                80
 04/13/2021   06:39:26   (  -0.11,-128.07) (   0.09,-127.21)   98.33                80
 04/13/2021   19:00:41   (   0.10,-128.13) (   1.03,-132.36)  481.32                80