Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 15.  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)
 04/15/2021   18:11:15   (   0.10,-128.05) (   0.65,-130.53)  283.12                80
 04/16/2021   17:53:15   (   0.10,-128.02) (  -0.44,-125.53)  282.99                80
 04/18/2021   06:12:14   (  -0.09,-127.88) (  -0.58,-130.12)  255.51                80
 04/19/2021   05:48:54   (  -0.09,-127.84) (   0.50,-125.12)  309.79                80
 04/20/2021   18:07:45   (   0.08,-127.87) (   0.49,-129.69)  207.02                80
 04/21/2021   17:49:45   (   0.09,-127.84) (  -0.60,-124.69)  358.47                80
 04/23/2021   06:08:44   (  -0.08,-127.70) (  -0.42,-129.28)  180.43                80
 04/24/2021   05:45:23   (  -0.08,-127.65) (   0.66,-124.28)  384.44                80
 04/25/2021   18:04:15   (   0.08,-127.67) (   0.32,-128.85)  133.43                80
 04/26/2021   17:46:14   (   0.08,-127.63) (  -0.77,-123.85)  431.60                80
 04/28/2021   06:05:13   (  -0.07,-127.49) (  -0.31,-128.43)  107.94                80