Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 11 6.  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)
 11/07/2021   06:13:20   (   0.31,-128.45) (  -0.09,-130.25)  205.32                80
 11/08/2021   05:50:01   (   0.31,-128.45) (   1.01,-125.26)  363.73                80
 11/09/2021   18:11:33   (  -0.30,-128.45) (  -0.01,-129.83)  155.64                80
 11/10/2021   17:50:54   (  -0.30,-128.45) (  -1.12,-124.83)  413.29                80
 11/12/2021   06:09:53   (   0.29,-128.44) (   0.06,-129.42)  111.12                80
 11/13/2021   05:46:33   (   0.29,-128.44) (   1.17,-124.42)  457.70                80
 11/14/2021   18:08:06   (  -0.28,-128.44) (  -0.17,-128.99)   61.78                80
 11/17/2021   06:06:25   (   0.28,-128.43) (   0.22,-128.58)   17.61                80
 11/19/2021   18:01:58   (  -0.27,-128.42) (  -0.34,-128.15)   30.65                80