Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 04/10/2021   18:14:46   (   0.11,-128.18) (   0.82,-131.37)  363.57                80
 04/11/2021   17:56:45   (   0.11,-128.16) (  -0.26,-126.37)  203.47                80
 04/13/2021   06:15:44   (  -0.11,-128.03) (  -0.75,-130.96)  334.08                80
 04/14/2021   05:52:24   (  -0.11,-128.00) (   0.33,-125.96)  232.22                80
 04/15/2021   18:11:15   (   0.10,-128.05) (   0.67,-130.53)  282.59                80
 04/16/2021   17:53:16   (   0.10,-128.02) (  -0.48,-125.54)  283.63                80
 04/18/2021   06:12:14   (  -0.09,-127.89) (  -0.60,-130.12)  254.93                80
 04/19/2021   05:48:54   (  -0.09,-127.85) (   0.49,-125.12)  310.49                80
 04/20/2021   18:07:45   (   0.09,-127.88) (   0.50,-129.68)  205.89                80
 04/21/2021   17:49:45   (   0.09,-127.85) (  -0.64,-124.70)  359.70                80
 04/23/2021   06:08:44   (  -0.08,-127.71) (  -0.44,-129.28)  179.26                80