Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 4 12.  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)
 04/13/2021   06:15:44   (  -0.10,-128.03) (  -0.77,-130.96)  334.17                80
 04/14/2021   05:52:25   (  -0.11,-128.00) (   0.37,-125.97)  232.07                80
 04/15/2021   18:11:16   (   0.10,-128.05) (   0.63,-130.54)  283.02                80
 04/16/2021   17:53:15   (   0.10,-128.02) (  -0.46,-125.53)  283.14                80
 04/18/2021   06:12:14   (  -0.09,-127.88) (  -0.62,-130.12)  255.42                80
 04/19/2021   05:48:54   (  -0.09,-127.84) (   0.53,-125.13)  309.94                80
 04/20/2021   18:07:46   (   0.08,-127.87) (   0.46,-129.69)  206.68                80
 04/21/2021   17:49:45   (   0.09,-127.84) (  -0.63,-124.69)  358.85                80
 04/23/2021   06:08:43   (  -0.08,-127.70) (  -0.46,-129.27)  180.10                80
 04/24/2021   05:45:24   (  -0.09,-127.66) (   0.69,-124.28)  384.84                80
 04/25/2021   18:04:14   (   0.08,-127.68) (   0.35,-128.84)  132.82                80