Simultaneous Nadir Overpasses (SNOs) between GOES-15 and METOP-B
TLE Epoch: 2021 10 22.  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)
 10/24/2021   06:02:59   (   0.34,-128.33) (   0.47,-127.75)   65.86                80
 10/25/2021   18:19:12   (  -0.34,-128.35) (   0.53,-132.32)  451.02                80
 10/26/2021   18:01:12   (  -0.33,-128.37) (  -0.57,-127.32)  119.50                80
 10/28/2021   06:20:13   (   0.33,-128.38) (  -0.47,-131.91)  403.18                80
 10/29/2021   05:56:53   (   0.33,-128.38) (   0.63,-126.91)  166.94                80
 10/30/2021   18:15:45   (  -0.32,-128.40) (   0.37,-131.48)  351.00                80
 10/31/2021   17:57:46   (  -0.32,-128.41) (  -0.73,-126.48)  218.97                80
 11/02/2021   06:16:46   (   0.32,-128.41) (  -0.30,-131.08)  304.24                80
 11/03/2021   05:53:28   (   0.32,-128.42) (   0.86,-126.10)  265.29                80
 11/04/2021   18:12:19   (  -0.32,-128.43) (   0.20,-130.65)  253.73                80