Simultaneous Nadir Overpasses (SNOs) between GOES-17 and METOP-B
TLE Epoch: 2021 9 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2021   18:47:09   (  -0.03,-137.20) (   0.42,-139.33)  242.23                80
 09/16/2021   18:29:10   (  -0.03,-137.20) (  -0.69,-134.34)  327.07                80
 09/18/2021   06:48:10   (   0.03,-137.20) (  -0.36,-138.93)  196.50                80
 09/19/2021   06:24:51   (   0.03,-137.20) (   0.75,-133.93)  372.66                80
 09/20/2021   18:43:42   (  -0.03,-137.20) (   0.26,-138.49)  147.16                80
 09/21/2021   18:25:43   (  -0.03,-137.20) (  -0.85,-133.49)  421.94                80
 09/23/2021   06:44:44   (   0.03,-137.20) (  -0.14,-138.10)  101.96                80
 09/24/2021   06:21:24   (   0.03,-137.19) (   0.97,-133.10)  466.78                80
 09/25/2021   18:40:15   (  -0.03,-137.18) (   0.10,-137.65)   54.17                80
 09/28/2021   06:41:16   (   0.03,-137.16) (   0.03,-137.26)   11.21                80