Simultaneous Nadir Overpasses (SNOs) between GOES-15 and LANDSAT-8
TLE Epoch: 2021 4 6.  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)
 04/06/2021   06:33:24   (  -0.11,-128.19) (   0.42,-125.72)  280.15                80
 04/06/2021   18:54:40   (   0.10,-128.26) (   0.64,-130.89)  297.82                80
 04/08/2021   18:45:07   (   0.11,-128.23) (   0.07,-127.92)   34.03                80
 04/10/2021   18:32:55   (   0.11,-128.19) (  -0.56,-124.97)  365.61                80
 04/11/2021   06:54:18   (  -0.10,-128.09) (  -0.55,-130.16)  235.45                80
 04/13/2021   06:39:27   (  -0.10,-128.04) (   0.09,-127.21)   95.68                80
 04/13/2021   19:00:41   (   0.10,-128.11) (   1.03,-132.36)  483.46                80
 04/15/2021   06:27:14   (  -0.10,-127.99) (   0.67,-124.24)  426.17                80
 04/15/2021   18:48:29   (   0.09,-128.06) (   0.39,-129.41)  153.03                80
 04/17/2021   18:38:57   (   0.09,-128.00) (  -0.25,-126.45)  176.61                80
 04/18/2021   07:00:21   (  -0.08,-127.91) (  -0.85,-131.64)  423.94                80