Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 7.  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)
 04/08/2021   18:45:07   (   0.10,-128.22) (   0.02,-127.93)   33.81                80
 04/10/2021   18:32:55   (   0.11,-128.18) (  -0.55,-124.97)  365.33                80
 04/11/2021   06:54:18   (  -0.10,-128.09) (  -0.56,-130.16)  235.76                80
 04/13/2021   06:39:26   (  -0.10,-128.04) (   0.08,-127.20)   95.25                80
 04/13/2021   19:00:42   (   0.09,-128.11) (   0.98,-132.37)  483.93                80
 04/15/2021   06:27:14   (  -0.10,-127.99) (   0.72,-124.25)  425.62                80
 04/15/2021   18:48:29   (   0.09,-128.06) (   0.40,-129.40)  153.63                80
 04/17/2021   18:38:57   (   0.09,-128.00) (  -0.24,-126.45)  175.91                80
 04/18/2021   07:00:21   (  -0.08,-127.91) (  -0.86,-131.64)  424.67                80
 04/20/2021   06:48:08   (  -0.08,-127.84) (  -0.28,-128.68)   96.01                80