Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 21.  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)
 10/21/2021   18:04:38   (  -0.34,-128.29) (  -0.40,-128.15)   16.88                80
 10/24/2021   06:01:53   (   0.34,-128.33) (   0.45,-127.75)   66.05                14
 10/25/2021   18:19:11   (  -0.34,-128.35) (   0.55,-132.31)  451.04                80
 10/26/2021   18:01:12   (  -0.33,-128.37) (  -0.55,-127.31)  119.53                80
 10/28/2021   06:20:13   (   0.33,-128.38) (  -0.43,-131.92)  402.92                80
 10/29/2021   05:56:54   (   0.33,-128.39) (   0.67,-126.92)  167.22                80
 10/30/2021   18:15:45   (  -0.32,-128.40) (   0.39,-131.48)  350.89                80
 10/31/2021   17:57:47   (  -0.32,-128.41) (  -0.77,-126.49)  219.11                80
 11/02/2021   06:16:47   (   0.32,-128.42) (  -0.25,-131.09)  303.83                80
 11/03/2021   05:53:27   (   0.32,-128.42) (   0.85,-126.09)  265.71                80