Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 11 9.  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)
 11/09/2021   18:11:32   (  -0.30,-128.46) (   0.03,-129.81)  155.54                80
 11/10/2021   17:50:54   (  -0.29,-128.45) (  -1.13,-124.83)  413.38                80
 11/12/2021   06:09:53   (   0.29,-128.44) (   0.07,-129.42)  111.19                80
 11/13/2021   05:46:34   (   0.29,-128.44) (   1.17,-124.42)  457.59                80
 11/14/2021   18:08:06   (  -0.28,-128.44) (  -0.17,-128.99)   61.81                80
 11/17/2021   06:06:26   (   0.28,-128.43) (   0.22,-128.58)   17.83                80
 11/19/2021   18:01:58   (  -0.27,-128.42) (  -0.33,-128.15)   30.45                80
 11/21/2021   06:23:38   (   0.26,-128.40) (  -0.72,-132.74)  494.89                80
 11/22/2021   06:00:18   (   0.26,-128.39) (   0.40,-127.74)   72.88                80