Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 11 11.  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)
 11/12/2021   06:09:53   (   0.28,-128.44) (   0.06,-129.42)  111.42                80
 11/13/2021   05:46:33   (   0.29,-128.44) (   1.17,-124.42)  457.29                80
 11/14/2021   18:08:06   (  -0.28,-128.44) (  -0.17,-128.99)   62.06                80
 11/17/2021   06:06:26   (   0.28,-128.42) (   0.22,-128.58)   18.45                80
 11/19/2021   18:01:58   (  -0.27,-128.41) (  -0.33,-128.15)   29.80                80
 11/21/2021   06:23:38   (   0.26,-128.39) (  -0.72,-132.74)  495.83                80
 11/22/2021   06:00:18   (   0.26,-128.38) (   0.39,-127.74)   71.87                80
 11/23/2021   18:21:51   (  -0.24,-128.36) (   0.61,-132.31)  449.40                80
 11/24/2021   17:58:31   (  -0.25,-128.35) (  -0.50,-127.32)  118.10                80