Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 11 16.  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)
 11/17/2021   06:06:25   (   0.27,-128.41) (   0.21,-128.58)   20.00                80
 11/19/2021   18:01:58   (  -0.27,-128.40) (  -0.32,-128.15)   28.70                80
 11/21/2021   06:23:38   (   0.25,-128.37) (  -0.73,-132.74)  498.37                80
 11/22/2021   06:00:18   (   0.26,-128.35) (   0.38,-127.74)   69.07                80
 11/23/2021   18:21:50   (  -0.24,-128.34) (   0.62,-132.31)  451.53                80
 11/24/2021   17:58:31   (  -0.25,-128.32) (  -0.50,-127.31)  115.73                80
 11/26/2021   06:20:10   (   0.23,-128.28) (  -0.55,-131.90)  412.19                80
 11/27/2021   05:56:51   (   0.24,-128.26) (   0.56,-126.91)  154.71                80
 11/28/2021   18:18:22   (  -0.22,-128.24) (   0.49,-131.46)  366.72                80
 11/29/2021   17:55:03   (  -0.23,-128.22) (  -0.62,-126.47)  199.99                80